generated/googleapis/lib/spanner/v1.dart

// This is a generated file (see the discoveryapis_generator project).

// ignore_for_file: camel_case_types
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// ignore_for_file: prefer_expression_function_bodies
// ignore_for_file: prefer_final_locals
// ignore_for_file: prefer_interpolation_to_compose_strings
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library googleapis.spanner.v1;

import 'dart:core' as core;
import 'dart:async' as async;
import 'dart:convert' as convert;

import 'package:_discoveryapis_commons/_discoveryapis_commons.dart' as commons;
import 'package:http/http.dart' as http;

export 'package:_discoveryapis_commons/_discoveryapis_commons.dart'
    show ApiRequestError, DetailedApiRequestError;

const userAgent = 'dart-api-client spanner/v1';

/// Cloud Spanner is a managed, mission-critical, globally consistent and
/// scalable relational database service.
class SpannerApi {
  /// View and manage your data across Google Cloud Platform services
  static const cloudPlatformScope =
      'https://www.googleapis.com/auth/cloud-platform';

  /// Administer your Spanner databases
  static const spannerAdminScope =
      'https://www.googleapis.com/auth/spanner.admin';

  /// View and manage the contents of your Spanner databases
  static const spannerDataScope =
      'https://www.googleapis.com/auth/spanner.data';

  final commons.ApiRequester _requester;

  ProjectsResourceApi get projects => ProjectsResourceApi(_requester);

  SpannerApi(http.Client client,
      {core.String rootUrl = 'https://spanner.googleapis.com/',
      core.String servicePath = ''})
      : _requester =
            commons.ApiRequester(client, rootUrl, servicePath, userAgent);
}

class ProjectsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstanceConfigsResourceApi get instanceConfigs =>
      ProjectsInstanceConfigsResourceApi(_requester);
  ProjectsInstancesResourceApi get instances =>
      ProjectsInstancesResourceApi(_requester);

  ProjectsResourceApi(commons.ApiRequester client) : _requester = client;
}

class ProjectsInstanceConfigsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstanceConfigsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Gets information about a particular instance configuration.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the requested instance configuration.
  /// Values are of the form `projects//instanceConfigs/`.
  /// Value must have pattern "^projects/[^/]+/instanceConfigs/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [InstanceConfig].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<InstanceConfig> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => InstanceConfig.fromJson(data));
  }

  /// Lists the supported instance configurations for a given project.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the project for which a list of supported
  /// instance configurations is requested. Values are of the form `projects/`.
  /// Value must have pattern "^projects/[^/]+$".
  ///
  /// [pageSize] - Number of instance configurations to be returned in the
  /// response. If 0 or less, defaults to the server's maximum allowed page
  /// size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListInstanceConfigsResponse.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListInstanceConfigsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListInstanceConfigsResponse> list(
    core.String parent, {
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$parent') +
        '/instanceConfigs';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListInstanceConfigsResponse.fromJson(data));
  }
}

class ProjectsInstancesResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesBackupOperationsResourceApi get backupOperations =>
      ProjectsInstancesBackupOperationsResourceApi(_requester);
  ProjectsInstancesBackupsResourceApi get backups =>
      ProjectsInstancesBackupsResourceApi(_requester);
  ProjectsInstancesDatabaseOperationsResourceApi get databaseOperations =>
      ProjectsInstancesDatabaseOperationsResourceApi(_requester);
  ProjectsInstancesDatabasesResourceApi get databases =>
      ProjectsInstancesDatabasesResourceApi(_requester);
  ProjectsInstancesOperationsResourceApi get operations =>
      ProjectsInstancesOperationsResourceApi(_requester);

  ProjectsInstancesResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Creates an instance and begins preparing it to begin serving. The returned
  /// long-running operation can be used to track the progress of preparing the
  /// new instance. The instance name is assigned by the caller. If the named
  /// instance already exists, `CreateInstance` returns `ALREADY_EXISTS`.
  /// Immediately upon completion of this request: * The instance is readable
  /// via the API, with all requested attributes but no allocated resources. Its
  /// state is `CREATING`. Until completion of the returned operation: *
  /// Cancelling the operation renders the instance immediately unreadable via
  /// the API. * The instance can be deleted. * All other attempts to modify the
  /// instance are rejected. Upon completion of the returned operation: *
  /// Billing for all successfully-allocated resources begins (some types may
  /// have lower than the requested levels). * Databases can be created in the
  /// instance. * The instance's allocated resource levels are readable via the
  /// API. * The instance's state becomes `READY`. The returned long-running
  /// operation will have a name of the format `/operations/` and can be used to
  /// track creation of the instance. The metadata field type is
  /// CreateInstanceMetadata. The response field type is Instance, if
  /// successful.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the project in which to create the
  /// instance. Values are of the form `projects/`.
  /// Value must have pattern "^projects/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> create(
    CreateInstanceRequest request,
    core.String parent, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/instances';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Deletes an instance. Immediately upon completion of the request: * Billing
  /// ceases for all of the instance's reserved resources. Soon afterward: * The
  /// instance and *all of its databases* immediately and irrevocably disappear
  /// from the API. All data in the databases is permanently deleted.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the instance to be deleted. Values are of
  /// the form `projects//instances/`
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets information about a particular instance.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the requested instance. Values are of the
  /// form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [fieldMask] - If field_mask is present, specifies the subset of Instance
  /// fields that should be returned. If absent, all Instance fields are
  /// returned.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Instance].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Instance> get(
    core.String name, {
    core.String fieldMask,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if (fieldMask != null) {
      _queryParams['fieldMask'] = [fieldMask];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Instance.fromJson(data));
  }

  /// Gets the access control policy for an instance resource. Returns an empty
  /// policy if an instance exists but does not have a policy set. Authorization
  /// requires `spanner.instances.getIamPolicy` on resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being retrieved. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> getIamPolicy(
    GetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':getIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Lists all instances in the given project.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the project for which a list of instances
  /// is requested. Values are of the form `projects/`.
  /// Value must have pattern "^projects/[^/]+$".
  ///
  /// [filter] - An expression for filtering the results of the request. Filter
  /// rules are case insensitive. The fields eligible for filtering are: *
  /// `name` * `display_name` * `labels.key` where key is the name of a label
  /// Some examples of using filters are: * `name:*` --> The instance has a
  /// name. * `name:Howl` --> The instance's name contains the string "howl". *
  /// `name:HOWL` --> Equivalent to above. * `NAME:howl` --> Equivalent to
  /// above. * `labels.env:*` --> The instance has the label "env". *
  /// `labels.env:dev` --> The instance has the label "env" and the value of the
  /// label contains the string "dev". * `name:howl labels.env:dev` --> The
  /// instance's name contains "howl" and it has the label "env" with its value
  /// containing "dev".
  ///
  /// [pageSize] - Number of instances to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListInstancesResponse.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListInstancesResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListInstancesResponse> list(
    core.String parent, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/instances';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListInstancesResponse.fromJson(data));
  }

  /// Updates an instance, and begins allocating or releasing resources as
  /// requested. The returned long-running operation can be used to track the
  /// progress of updating the instance. If the named instance does not exist,
  /// returns `NOT_FOUND`. Immediately upon completion of this request: * For
  /// resource types for which a decrease in the instance's allocation has been
  /// requested, billing is based on the newly-requested level. Until completion
  /// of the returned operation: * Cancelling the operation sets its metadata's
  /// cancel_time, and begins restoring resources to their pre-request values.
  /// The operation is guaranteed to succeed at undoing all resource changes,
  /// after which point it terminates with a `CANCELLED` status. * All other
  /// attempts to modify the instance are rejected. * Reading the instance via
  /// the API continues to give the pre-request resource levels. Upon completion
  /// of the returned operation: * Billing begins for all successfully-allocated
  /// resources (some types may have lower than the requested levels). * All
  /// newly-reserved resources are available for serving the instance's tables.
  /// * The instance's new resource levels are readable via the API. The
  /// returned long-running operation will have a name of the format
  /// `/operations/` and can be used to track the instance modification. The
  /// metadata field type is UpdateInstanceMetadata. The response field type is
  /// Instance, if successful. Authorization requires `spanner.instances.update`
  /// permission on resource name.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. A unique identifier for the instance, which cannot be
  /// changed after the instance is created. Values are of the form
  /// `projects//instances/a-z*[a-z0-9]`. The final segment of the name must be
  /// between 2 and 64 characters in length.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> patch(
    UpdateInstanceRequest request,
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'PATCH',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Sets the access control policy on an instance resource. Replaces any
  /// existing policy. Authorization requires `spanner.instances.setIamPolicy`
  /// on resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being set. The format is `projects//instances/` for instance resources and
  /// `projects//instances//databases/` for databases resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> setIamPolicy(
    SetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':setIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Returns permissions that the caller has on the specified instance
  /// resource. Attempting this RPC on a non-existent Cloud Spanner instance
  /// resource will result in a NOT_FOUND error if the user has
  /// `spanner.instances.list` permission on the containing Google Cloud
  /// Project. Otherwise returns an empty set of permissions.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which permissions
  /// are being tested. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [TestIamPermissionsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<TestIamPermissionsResponse> testIamPermissions(
    TestIamPermissionsRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':testIamPermissions';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => TestIamPermissionsResponse.fromJson(data));
  }
}

class ProjectsInstancesBackupOperationsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesBackupOperationsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Lists the backup long-running operations in the given instance. A backup
  /// operation has a name of the form
  /// `projects//instances//backups//operations/`. The long-running operation
  /// metadata field type `metadata.type_url` describes the type of the
  /// metadata. Operations returned include those that have
  /// completed/failed/canceled within the last 7 days, and pending operations.
  /// Operations returned are ordered by
  /// `operation.metadata.value.progress.start_time` in descending order
  /// starting from the most recently started operation.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The instance of the backup operations. Values are of
  /// the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [filter] - An expression that filters the list of returned backup
  /// operations. A filter expression consists of a field name, a comparison
  /// operator, and a value for filtering. The value must be a string, a number,
  /// or a boolean. The comparison operator must be one of: `<`, `>`, `<=`,
  /// `>=`, `!=`, `=`, or `:`. Colon `:` is the contains operator. Filter rules
  /// are not case sensitive. The following fields in the operation are eligible
  /// for filtering: * `name` - The name of the long-running operation * `done`
  /// - False if the operation is in progress, else true. * `metadata.@type` -
  /// the type of metadata. For example, the type string for
  /// CreateBackupMetadata is
  /// `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
  /// * `metadata.` - any field in metadata.value. * `error` - Error associated
  /// with the long-running operation. * `response.@type` - the type of
  /// response. * `response.` - any field in response.value. You can combine
  /// multiple expressions by enclosing each expression in parentheses. By
  /// default, expressions are combined with AND logic, but you can specify AND,
  /// OR, and NOT logic explicitly. Here are a few examples: * `done:true` - The
  /// operation is complete. * `metadata.database:prod` - The database the
  /// backup was taken from has a name containing the string "prod". *
  /// `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata)
  /// AND` \ `(metadata.name:howl) AND` \ `(metadata.progress.start_time <
  /// \"2018-03-28T14:50:00Z\") AND` \ `(error:*)` - Returns operations where: *
  /// The operation's metadata type is CreateBackupMetadata. * The backup name
  /// contains the string "howl". * The operation started before
  /// 2018-03-28T14:50:00Z. * The operation resulted in an error.
  ///
  /// [pageSize] - Number of operations to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListBackupOperationsResponse to the same `parent` and with
  /// the same `filter`.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListBackupOperationsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListBackupOperationsResponse> list(
    core.String parent, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$parent') +
        '/backupOperations';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response
        .then((data) => ListBackupOperationsResponse.fromJson(data));
  }
}

class ProjectsInstancesBackupsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesBackupsOperationsResourceApi get operations =>
      ProjectsInstancesBackupsOperationsResourceApi(_requester);

  ProjectsInstancesBackupsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Starts creating a new Cloud Spanner Backup. The returned backup
  /// long-running operation will have a name of the format
  /// `projects//instances//backups//operations/` and can be used to track
  /// creation of the backup. The metadata field type is CreateBackupMetadata.
  /// The response field type is Backup, if successful. Cancelling the returned
  /// operation will stop the creation and delete the backup. There can be only
  /// one pending backup creation per database. Backup creation of different
  /// databases can run concurrently.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the instance in which the backup will be
  /// created. This must be the same instance that contains the database the
  /// backup will be created from. The backup will be stored in the location(s)
  /// specified in the instance configuration of this instance. Values are of
  /// the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [backupId] - Required. The id of the backup to be created. The `backup_id`
  /// appended to `parent` forms the full backup name of the form
  /// `projects//instances//backups/`.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> create(
    Backup request,
    core.String parent, {
    core.String backupId,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (backupId != null) {
      _queryParams['backupId'] = [backupId];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/backups';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Deletes a pending or completed Backup.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. Name of the backup to delete. Values are of the form
  /// `projects//instances//backups/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets metadata on a pending or completed Backup.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. Name of the backup. Values are of the form
  /// `projects//instances//backups/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Backup].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Backup> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Backup.fromJson(data));
  }

  /// Gets the access control policy for a database or backup resource. Returns
  /// an empty policy if a database or backup exists but does not have a policy
  /// set. Authorization requires `spanner.databases.getIamPolicy` permission on
  /// resource. For backups, authorization requires
  /// `spanner.backups.getIamPolicy` permission on resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being retrieved. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> getIamPolicy(
    GetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':getIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Lists completed and pending backups. Backups returned are ordered by
  /// `create_time` in descending order, starting from the most recent
  /// `create_time`.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The instance to list backups from. Values are of the
  /// form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [filter] - An expression that filters the list of returned backups. A
  /// filter expression consists of a field name, a comparison operator, and a
  /// value for filtering. The value must be a string, a number, or a boolean.
  /// The comparison operator must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`,
  /// or `:`. Colon `:` is the contains operator. Filter rules are not case
  /// sensitive. The following fields in the Backup are eligible for filtering:
  /// * `name` * `database` * `state` * `create_time` (and values are of the
  /// format YYYY-MM-DDTHH:MM:SSZ) * `expire_time` (and values are of the format
  /// YYYY-MM-DDTHH:MM:SSZ) * `size_bytes` You can combine multiple expressions
  /// by enclosing each expression in parentheses. By default, expressions are
  /// combined with AND logic, but you can specify AND, OR, and NOT logic
  /// explicitly. Here are a few examples: * `name:Howl` - The backup's name
  /// contains the string "howl". * `database:prod` - The database's name
  /// contains the string "prod". * `state:CREATING` - The backup is pending
  /// creation. * `state:READY` - The backup is fully created and ready for use.
  /// * `(name:howl) AND (create_time < \"2018-03-28T14:50:00Z\")` - The backup
  /// name contains the string "howl" and `create_time` of the backup is before
  /// 2018-03-28T14:50:00Z. * `expire_time < \"2018-03-28T14:50:00Z\"` - The
  /// backup `expire_time` is before 2018-03-28T14:50:00Z. * `size_bytes >
  /// 10000000000` - The backup's size is greater than 10GB
  ///
  /// [pageSize] - Number of backups to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListBackupsResponse to the same `parent` and with the same
  /// `filter`.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListBackupsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListBackupsResponse> list(
    core.String parent, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/backups';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListBackupsResponse.fromJson(data));
  }

  /// Updates a pending or completed Backup.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [name] - Output only for the CreateBackup operation. Required for the
  /// UpdateBackup operation. A globally unique identifier for the backup which
  /// cannot be changed. Values are of the form
  /// `projects//instances//backups/a-z*[a-z0-9]` The final segment of the name
  /// must be between 2 and 60 characters in length. The backup is stored in the
  /// location(s) specified in the instance configuration of the instance
  /// containing the backup, identified by the prefix of the backup name of the
  /// form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [updateMask] - Required. A mask specifying which fields (e.g.
  /// `expire_time`) in the Backup resource should be updated. This mask is
  /// relative to the Backup resource, not to the request message. The field
  /// mask must always be specified; this prevents any future fields from being
  /// erased accidentally by clients that do not know about them.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Backup].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Backup> patch(
    Backup request,
    core.String name, {
    core.String updateMask,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if (updateMask != null) {
      _queryParams['updateMask'] = [updateMask];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'PATCH',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Backup.fromJson(data));
  }

  /// Sets the access control policy on a database or backup resource. Replaces
  /// any existing policy. Authorization requires
  /// `spanner.databases.setIamPolicy` permission on resource. For backups,
  /// authorization requires `spanner.backups.setIamPolicy` permission on
  /// resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being set. The format is `projects//instances/` for instance resources and
  /// `projects//instances//databases/` for databases resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> setIamPolicy(
    SetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':setIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Returns permissions that the caller has on the specified database or
  /// backup resource. Attempting this RPC on a non-existent Cloud Spanner
  /// database will result in a NOT_FOUND error if the user has
  /// `spanner.databases.list` permission on the containing Cloud Spanner
  /// instance. Otherwise returns an empty set of permissions. Calling this
  /// method on a backup that does not exist will result in a NOT_FOUND error if
  /// the user has `spanner.backups.list` permission on the containing instance.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which permissions
  /// are being tested. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/backups/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [TestIamPermissionsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<TestIamPermissionsResponse> testIamPermissions(
    TestIamPermissionsRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':testIamPermissions';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => TestIamPermissionsResponse.fromJson(data));
  }
}

class ProjectsInstancesBackupsOperationsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesBackupsOperationsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Starts asynchronous cancellation on a long-running operation. The server
  /// makes a best effort to cancel the operation, but success is not
  /// guaranteed. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`. Clients can use Operations.GetOperation
  /// or other methods to check whether the cancellation succeeded or whether
  /// the operation completed despite cancellation. On successful cancellation,
  /// the operation is not deleted; instead, it becomes an operation with an
  /// Operation.error value with a google.rpc.Status.code of 1, corresponding to
  /// `Code.CANCELLED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be cancelled.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/backups/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> cancel(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name') + ':cancel';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Deletes a long-running operation. This method indicates that the client is
  /// no longer interested in the operation result. It does not cancel the
  /// operation. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be deleted.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/backups/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets the latest state of a long-running operation. Clients can use this
  /// method to poll the operation result at intervals as recommended by the API
  /// service.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/backups/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Lists operations that match the specified filter in the request. If the
  /// server doesn't support this method, it returns `UNIMPLEMENTED`. NOTE: the
  /// `name` binding allows API services to override the binding to use
  /// different resource name schemes, such as `users / * /operations`. To
  /// override the binding, API services can add a binding such as
  /// `"/v1/{name=users / * }/operations"` to their service configuration. For
  /// backwards compatibility, the default name includes the operations
  /// collection id, however overriding users must ensure the name binding is
  /// the parent resource, without the operations collection id.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation's parent resource.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/backups/[^/]+/operations$".
  ///
  /// [filter] - The standard list filter.
  ///
  /// [pageSize] - The standard list page size.
  ///
  /// [pageToken] - The standard list page token.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListOperationsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListOperationsResponse> list(
    core.String name, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListOperationsResponse.fromJson(data));
  }
}

class ProjectsInstancesDatabaseOperationsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesDatabaseOperationsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Lists database longrunning-operations. A database operation has a name of
  /// the form `projects//instances//databases//operations/`. The long-running
  /// operation metadata field type `metadata.type_url` describes the type of
  /// the metadata. Operations returned include those that have
  /// completed/failed/canceled within the last 7 days, and pending operations.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The instance of the database operations. Values are
  /// of the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [filter] - An expression that filters the list of returned operations. A
  /// filter expression consists of a field name, a comparison operator, and a
  /// value for filtering. The value must be a string, a number, or a boolean.
  /// The comparison operator must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`,
  /// or `:`. Colon `:` is the contains operator. Filter rules are not case
  /// sensitive. The following fields in the Operation are eligible for
  /// filtering: * `name` - The name of the long-running operation * `done` -
  /// False if the operation is in progress, else true. * `metadata.@type` - the
  /// type of metadata. For example, the type string for RestoreDatabaseMetadata
  /// is
  /// `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
  /// * `metadata.` - any field in metadata.value. * `error` - Error associated
  /// with the long-running operation. * `response.@type` - the type of
  /// response. * `response.` - any field in response.value. You can combine
  /// multiple expressions by enclosing each expression in parentheses. By
  /// default, expressions are combined with AND logic. However, you can specify
  /// AND, OR, and NOT logic explicitly. Here are a few examples: * `done:true`
  /// - The operation is complete. *
  /// `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata)
  /// AND` \ `(metadata.source_type:BACKUP) AND` \
  /// `(metadata.backup_info.backup:backup_howl) AND` \
  /// `(metadata.name:restored_howl) AND` \ `(metadata.progress.start_time <
  /// \"2018-03-28T14:50:00Z\") AND` \ `(error:*)` - Return operations where: *
  /// The operation's metadata type is RestoreDatabaseMetadata. * The database
  /// is restored from a backup. * The backup name contains "backup_howl". * The
  /// restored database's name contains "restored_howl". * The operation started
  /// before 2018-03-28T14:50:00Z. * The operation resulted in an error.
  ///
  /// [pageSize] - Number of operations to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListDatabaseOperationsResponse to the same `parent` and
  /// with the same `filter`.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListDatabaseOperationsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListDatabaseOperationsResponse> list(
    core.String parent, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$parent') +
        '/databaseOperations';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response
        .then((data) => ListDatabaseOperationsResponse.fromJson(data));
  }
}

class ProjectsInstancesDatabasesResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesDatabasesOperationsResourceApi get operations =>
      ProjectsInstancesDatabasesOperationsResourceApi(_requester);
  ProjectsInstancesDatabasesSessionsResourceApi get sessions =>
      ProjectsInstancesDatabasesSessionsResourceApi(_requester);

  ProjectsInstancesDatabasesResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Creates a new Cloud Spanner database and starts to prepare it for serving.
  /// The returned long-running operation will have a name of the format
  /// `/operations/` and can be used to track preparation of the database. The
  /// metadata field type is CreateDatabaseMetadata. The response field type is
  /// Database, if successful.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the instance that will serve the new
  /// database. Values are of the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> create(
    CreateDatabaseRequest request,
    core.String parent, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/databases';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Drops (aka deletes) a Cloud Spanner database. Completed backups for the
  /// database will be retained according to their `expire_time`.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database to be dropped.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> dropDatabase(
    core.String database, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$database');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets the state of a Cloud Spanner database.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the requested database. Values are of the
  /// form `projects//instances//databases/`.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Database].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Database> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Database.fromJson(data));
  }

  /// Returns the schema of a Cloud Spanner database as a list of formatted DDL
  /// statements. This method does not show pending schema updates, those may be
  /// queried using the Operations API.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database whose schema we wish to get. Values
  /// are of the form `projects//instances//databases/`
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [GetDatabaseDdlResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<GetDatabaseDdlResponse> getDdl(
    core.String database, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$database') + '/ddl';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => GetDatabaseDdlResponse.fromJson(data));
  }

  /// Gets the access control policy for a database or backup resource. Returns
  /// an empty policy if a database or backup exists but does not have a policy
  /// set. Authorization requires `spanner.databases.getIamPolicy` permission on
  /// resource. For backups, authorization requires
  /// `spanner.backups.getIamPolicy` permission on resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being retrieved. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> getIamPolicy(
    GetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':getIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Lists Cloud Spanner databases.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The instance whose databases should be listed. Values
  /// are of the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [pageSize] - Number of databases to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListDatabasesResponse.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListDatabasesResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListDatabasesResponse> list(
    core.String parent, {
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$parent') + '/databases';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListDatabasesResponse.fromJson(data));
  }

  /// Create a new database by restoring from a completed backup. The new
  /// database must be in the same project and in an instance with the same
  /// instance configuration as the instance containing the backup. The returned
  /// database long-running operation has a name of the format
  /// `projects//instances//databases//operations/`, and can be used to track
  /// the progress of the operation, and to cancel it. The metadata field type
  /// is RestoreDatabaseMetadata. The response type is Database, if successful.
  /// Cancelling the returned operation will stop the restore and delete the
  /// database. There can be only one database being restored into an instance
  /// at a time. Once the restore operation completes, a new restore operation
  /// can be initiated, without waiting for the optimize operation associated
  /// with the first restore to complete.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [parent] - Required. The name of the instance in which to create the
  /// restored database. This instance must be in the same project and have the
  /// same instance configuration as the instance containing the source backup.
  /// Values are of the form `projects//instances/`.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> restore(
    RestoreDatabaseRequest request,
    core.String parent, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (parent == null) {
      throw core.ArgumentError('Parameter parent is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$parent') +
        '/databases:restore';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Sets the access control policy on a database or backup resource. Replaces
  /// any existing policy. Authorization requires
  /// `spanner.databases.setIamPolicy` permission on resource. For backups,
  /// authorization requires `spanner.backups.setIamPolicy` permission on
  /// resource.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which the policy is
  /// being set. The format is `projects//instances/` for instance resources and
  /// `projects//instances//databases/` for databases resources.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Policy].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Policy> setIamPolicy(
    SetIamPolicyRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':setIamPolicy';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Policy.fromJson(data));
  }

  /// Returns permissions that the caller has on the specified database or
  /// backup resource. Attempting this RPC on a non-existent Cloud Spanner
  /// database will result in a NOT_FOUND error if the user has
  /// `spanner.databases.list` permission on the containing Cloud Spanner
  /// instance. Otherwise returns an empty set of permissions. Calling this
  /// method on a backup that does not exist will result in a NOT_FOUND error if
  /// the user has `spanner.backups.list` permission on the containing instance.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [resource] - REQUIRED: The Cloud Spanner resource for which permissions
  /// are being tested. The format is `projects//instances/` for instance
  /// resources and `projects//instances//databases/` for database resources.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [TestIamPermissionsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<TestIamPermissionsResponse> testIamPermissions(
    TestIamPermissionsRequest request,
    core.String resource, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (resource == null) {
      throw core.ArgumentError('Parameter resource is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$resource') +
        ':testIamPermissions';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => TestIamPermissionsResponse.fromJson(data));
  }

  /// Updates the schema of a Cloud Spanner database by
  /// creating/altering/dropping tables, columns, indexes, etc. The returned
  /// long-running operation will have a name of the format `/operations/` and
  /// can be used to track execution of the schema change(s). The metadata field
  /// type is UpdateDatabaseDdlMetadata. The operation has no response.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database to update.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> updateDdl(
    UpdateDatabaseDdlRequest request,
    core.String database, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$database') + '/ddl';

    final _response = _requester.request(
      _url,
      'PATCH',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }
}

class ProjectsInstancesDatabasesOperationsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesDatabasesOperationsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Starts asynchronous cancellation on a long-running operation. The server
  /// makes a best effort to cancel the operation, but success is not
  /// guaranteed. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`. Clients can use Operations.GetOperation
  /// or other methods to check whether the cancellation succeeded or whether
  /// the operation completed despite cancellation. On successful cancellation,
  /// the operation is not deleted; instead, it becomes an operation with an
  /// Operation.error value with a google.rpc.Status.code of 1, corresponding to
  /// `Code.CANCELLED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be cancelled.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> cancel(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name') + ':cancel';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Deletes a long-running operation. This method indicates that the client is
  /// no longer interested in the operation result. It does not cancel the
  /// operation. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be deleted.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets the latest state of a long-running operation. Clients can use this
  /// method to poll the operation result at intervals as recommended by the API
  /// service.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Lists operations that match the specified filter in the request. If the
  /// server doesn't support this method, it returns `UNIMPLEMENTED`. NOTE: the
  /// `name` binding allows API services to override the binding to use
  /// different resource name schemes, such as `users / * /operations`. To
  /// override the binding, API services can add a binding such as
  /// `"/v1/{name=users / * }/operations"` to their service configuration. For
  /// backwards compatibility, the default name includes the operations
  /// collection id, however overriding users must ensure the name binding is
  /// the parent resource, without the operations collection id.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation's parent resource.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/operations$".
  ///
  /// [filter] - The standard list filter.
  ///
  /// [pageSize] - The standard list page size.
  ///
  /// [pageToken] - The standard list page token.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListOperationsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListOperationsResponse> list(
    core.String name, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListOperationsResponse.fromJson(data));
  }
}

class ProjectsInstancesDatabasesSessionsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesDatabasesSessionsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Creates multiple new sessions. This API can be used to initialize a
  /// session cache on the clients. See https://goo.gl/TgSFN2 for best practices
  /// on session cache management.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database in which the new sessions are created.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [BatchCreateSessionsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<BatchCreateSessionsResponse> batchCreate(
    BatchCreateSessionsRequest request,
    core.String database, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$database') +
        '/sessions:batchCreate';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => BatchCreateSessionsResponse.fromJson(data));
  }

  /// Begins a new transaction. This step can often be skipped: Read, ExecuteSql
  /// and Commit can begin a new transaction as a side-effect.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the transaction runs.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Transaction].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Transaction> beginTransaction(
    BeginTransactionRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':beginTransaction';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Transaction.fromJson(data));
  }

  /// Commits a transaction. The request includes the mutations to be applied to
  /// rows in the database. `Commit` might return an `ABORTED` error. This can
  /// occur at any time; commonly, the cause is conflicts with concurrent
  /// transactions. However, it can also happen for a variety of other reasons.
  /// If `Commit` returns `ABORTED`, the caller should re-attempt the
  /// transaction from the beginning, re-using the same session. On very rare
  /// occasions, `Commit` might return `UNKNOWN`. This can happen, for example,
  /// if the client job experiences a 1+ hour networking failure. At that point,
  /// Cloud Spanner has lost track of the transaction outcome and we recommend
  /// that you perform another read from the database to see the state of things
  /// as they are now.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the transaction to be committed
  /// is running.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [CommitResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<CommitResponse> commit(
    CommitRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$session') + ':commit';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => CommitResponse.fromJson(data));
  }

  /// Creates a new session. A session can be used to perform transactions that
  /// read and/or modify data in a Cloud Spanner database. Sessions are meant to
  /// be reused for many consecutive transactions. Sessions can only execute one
  /// transaction at a time. To execute multiple concurrent
  /// read-write/write-only transactions, create multiple sessions. Note that
  /// standalone reads and queries use a transaction internally, and count
  /// toward the one transaction limit. Active sessions use additional server
  /// resources, so it is a good idea to delete idle and unneeded sessions.
  /// Aside from explicit deletes, Cloud Spanner may delete sessions for which
  /// no operations are sent for more than an hour. If a session is deleted,
  /// requests to it return `NOT_FOUND`. Idle sessions can be kept alive by
  /// sending a trivial SQL query periodically, e.g., `"SELECT 1"`.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database in which the new session is created.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Session].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Session> create(
    CreateSessionRequest request,
    core.String database, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$database') +
        '/sessions';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Session.fromJson(data));
  }

  /// Ends a session, releasing server resources associated with it. This will
  /// asynchronously trigger cancellation of any operations that are running
  /// with this session.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the session to delete.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Executes a batch of SQL DML statements. This method allows many statements
  /// to be run with lower latency than submitting them sequentially with
  /// ExecuteSql. Statements are executed in sequential order. A request can
  /// succeed even if a statement fails. The ExecuteBatchDmlResponse.status
  /// field in the response provides information about the statement that
  /// failed. Clients must inspect this field to determine whether an error
  /// occurred. Execution stops after the first failed statement; the remaining
  /// statements are not executed.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the DML statements should be
  /// performed.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ExecuteBatchDmlResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ExecuteBatchDmlResponse> executeBatchDml(
    ExecuteBatchDmlRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':executeBatchDml';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ExecuteBatchDmlResponse.fromJson(data));
  }

  /// Executes an SQL statement, returning all results in a single reply. This
  /// method cannot be used to return a result set larger than 10 MiB; if the
  /// query yields more data than that, the query fails with a
  /// `FAILED_PRECONDITION` error. Operations inside read-write transactions
  /// might return `ABORTED`. If this occurs, the application should restart the
  /// transaction from the beginning. See Transaction for more details. Larger
  /// result sets can be fetched in streaming fashion by calling
  /// ExecuteStreamingSql instead.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the SQL query should be
  /// performed.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ResultSet].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ResultSet> executeSql(
    ExecuteSqlRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':executeSql';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ResultSet.fromJson(data));
  }

  /// Like ExecuteSql, except returns the result set as a stream. Unlike
  /// ExecuteSql, there is no limit on the size of the returned result set.
  /// However, no individual row in the result set can exceed 100 MiB, and no
  /// column value can exceed 10 MiB.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the SQL query should be
  /// performed.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [PartialResultSet].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<PartialResultSet> executeStreamingSql(
    ExecuteSqlRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':executeStreamingSql';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => PartialResultSet.fromJson(data));
  }

  /// Gets a session. Returns `NOT_FOUND` if the session does not exist. This is
  /// mainly useful for determining whether a session is still alive.
  ///
  /// Request parameters:
  ///
  /// [name] - Required. The name of the session to retrieve.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Session].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Session> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Session.fromJson(data));
  }

  /// Lists all sessions in a given database.
  ///
  /// Request parameters:
  ///
  /// [database] - Required. The database in which to list sessions.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+$".
  ///
  /// [filter] - An expression for filtering the results of the request. Filter
  /// rules are case insensitive. The fields eligible for filtering are: *
  /// `labels.key` where key is the name of a label Some examples of using
  /// filters are: * `labels.env:*` --> The session has the label "env". *
  /// `labels.env:dev` --> The session has the label "env" and the value of the
  /// label contains the string "dev".
  ///
  /// [pageSize] - Number of sessions to be returned in the response. If 0 or
  /// less, defaults to the server's maximum allowed page size.
  ///
  /// [pageToken] - If non-empty, `page_token` should contain a next_page_token
  /// from a previous ListSessionsResponse.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListSessionsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListSessionsResponse> list(
    core.String database, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (database == null) {
      throw core.ArgumentError('Parameter database is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$database') +
        '/sessions';

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListSessionsResponse.fromJson(data));
  }

  /// Creates a set of partition tokens that can be used to execute a query
  /// operation in parallel. Each of the returned partition tokens can be used
  /// by ExecuteStreamingSql to specify a subset of the query result to read.
  /// The same session and read-only transaction must be used by the
  /// PartitionQueryRequest used to create the partition tokens and the
  /// ExecuteSqlRequests that use the partition tokens. Partition tokens become
  /// invalid when the session used to create them is deleted, is idle for too
  /// long, begins a new transaction, or becomes too old. When any of these
  /// happen, it is not possible to resume the query, and the whole operation
  /// must be restarted from the beginning.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session used to create the partitions.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [PartitionResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<PartitionResponse> partitionQuery(
    PartitionQueryRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':partitionQuery';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => PartitionResponse.fromJson(data));
  }

  /// Creates a set of partition tokens that can be used to execute a read
  /// operation in parallel. Each of the returned partition tokens can be used
  /// by StreamingRead to specify a subset of the read result to read. The same
  /// session and read-only transaction must be used by the PartitionReadRequest
  /// used to create the partition tokens and the ReadRequests that use the
  /// partition tokens. There are no ordering guarantees on rows returned among
  /// the returned partition tokens, or even within each individual
  /// StreamingRead call issued with a partition_token. Partition tokens become
  /// invalid when the session used to create them is deleted, is idle for too
  /// long, begins a new transaction, or becomes too old. When any of these
  /// happen, it is not possible to resume the read, and the whole operation
  /// must be restarted from the beginning.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session used to create the partitions.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [PartitionResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<PartitionResponse> partitionRead(
    PartitionReadRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':partitionRead';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => PartitionResponse.fromJson(data));
  }

  /// Reads rows from the database using key lookups and scans, as a simple
  /// key/value style alternative to ExecuteSql. This method cannot be used to
  /// return a result set larger than 10 MiB; if the read matches more data than
  /// that, the read fails with a `FAILED_PRECONDITION` error. Reads inside
  /// read-write transactions might return `ABORTED`. If this occurs, the
  /// application should restart the transaction from the beginning. See
  /// Transaction for more details. Larger result sets can be yielded in
  /// streaming fashion by calling StreamingRead instead.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the read should be performed.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ResultSet].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ResultSet> read(
    ReadRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$session') + ':read';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ResultSet.fromJson(data));
  }

  /// Rolls back a transaction, releasing any locks it holds. It is a good idea
  /// to call this for any transaction that includes one or more Read or
  /// ExecuteSql requests and ultimately decides not to commit. `Rollback`
  /// returns `OK` if it successfully aborts the transaction, the transaction
  /// was already aborted, or the transaction is not found. `Rollback` never
  /// returns `ABORTED`.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the transaction to roll back is
  /// running.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> rollback(
    RollbackRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url =
        'v1/' + commons.Escaper.ecapeVariableReserved('$session') + ':rollback';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Like Read, except returns the result set as a stream. Unlike Read, there
  /// is no limit on the size of the returned result set. However, no individual
  /// row in the result set can exceed 100 MiB, and no column value can exceed
  /// 10 MiB.
  ///
  /// [request] - The metadata request object.
  ///
  /// Request parameters:
  ///
  /// [session] - Required. The session in which the read should be performed.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/databases/[^/]+/sessions/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [PartialResultSet].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<PartialResultSet> streamingRead(
    ReadRequest request,
    core.String session, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (request != null) {
      _body = convert.json.encode(request.toJson());
    }
    if (session == null) {
      throw core.ArgumentError('Parameter session is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' +
        commons.Escaper.ecapeVariableReserved('$session') +
        ':streamingRead';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => PartialResultSet.fromJson(data));
  }
}

class ProjectsInstancesOperationsResourceApi {
  final commons.ApiRequester _requester;

  ProjectsInstancesOperationsResourceApi(commons.ApiRequester client)
      : _requester = client;

  /// Starts asynchronous cancellation on a long-running operation. The server
  /// makes a best effort to cancel the operation, but success is not
  /// guaranteed. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`. Clients can use Operations.GetOperation
  /// or other methods to check whether the cancellation succeeded or whether
  /// the operation completed despite cancellation. On successful cancellation,
  /// the operation is not deleted; instead, it becomes an operation with an
  /// Operation.error value with a google.rpc.Status.code of 1, corresponding to
  /// `Code.CANCELLED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be cancelled.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> cancel(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name') + ':cancel';

    final _response = _requester.request(
      _url,
      'POST',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Deletes a long-running operation. This method indicates that the client is
  /// no longer interested in the operation result. It does not cancel the
  /// operation. If the server doesn't support this method, it returns
  /// `google.rpc.Code.UNIMPLEMENTED`.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource to be deleted.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Empty].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Empty> delete(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'DELETE',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Empty.fromJson(data));
  }

  /// Gets the latest state of a long-running operation. Clients can use this
  /// method to poll the operation result at intervals as recommended by the API
  /// service.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation resource.
  /// Value must have pattern
  /// "^projects/[^/]+/instances/[^/]+/operations/[^/]+$".
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [Operation].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<Operation> get(
    core.String name, {
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => Operation.fromJson(data));
  }

  /// Lists operations that match the specified filter in the request. If the
  /// server doesn't support this method, it returns `UNIMPLEMENTED`. NOTE: the
  /// `name` binding allows API services to override the binding to use
  /// different resource name schemes, such as `users / * /operations`. To
  /// override the binding, API services can add a binding such as
  /// `"/v1/{name=users / * }/operations"` to their service configuration. For
  /// backwards compatibility, the default name includes the operations
  /// collection id, however overriding users must ensure the name binding is
  /// the parent resource, without the operations collection id.
  ///
  /// Request parameters:
  ///
  /// [name] - The name of the operation's parent resource.
  /// Value must have pattern "^projects/[^/]+/instances/[^/]+/operations$".
  ///
  /// [filter] - The standard list filter.
  ///
  /// [pageSize] - The standard list page size.
  ///
  /// [pageToken] - The standard list page token.
  ///
  /// [$fields] - Selector specifying which fields to include in a partial
  /// response.
  ///
  /// Completes with a [ListOperationsResponse].
  ///
  /// Completes with a [commons.ApiRequestError] if the API endpoint returned an
  /// error.
  ///
  /// If the used [http.Client] completes with an error when making a REST call,
  /// this method will complete with the same error.
  async.Future<ListOperationsResponse> list(
    core.String name, {
    core.String filter,
    core.int pageSize,
    core.String pageToken,
    core.String $fields,
  }) {
    core.String _url;
    final _queryParams = <core.String, core.List<core.String>>{};
    commons.Media _uploadMedia;
    commons.UploadOptions _uploadOptions;
    var _downloadOptions = commons.DownloadOptions.Metadata;
    core.String _body;

    if (name == null) {
      throw core.ArgumentError('Parameter name is required.');
    }
    if (filter != null) {
      _queryParams['filter'] = [filter];
    }
    if (pageSize != null) {
      _queryParams['pageSize'] = ['${pageSize}'];
    }
    if (pageToken != null) {
      _queryParams['pageToken'] = [pageToken];
    }
    if ($fields != null) {
      _queryParams['fields'] = [$fields];
    }

    _url = 'v1/' + commons.Escaper.ecapeVariableReserved('$name');

    final _response = _requester.request(
      _url,
      'GET',
      body: _body,
      queryParams: _queryParams,
      uploadOptions: _uploadOptions,
      uploadMedia: _uploadMedia,
      downloadOptions: _downloadOptions,
    );
    return _response.then((data) => ListOperationsResponse.fromJson(data));
  }
}

/// A backup of a Cloud Spanner database.
class Backup {
  /// Output only. The backup will contain an externally consistent copy of the
  /// database at the timestamp specified by `create_time`. `create_time` is
  /// approximately the time the CreateBackup request is received.
  core.String createTime;

  /// Required for the CreateBackup operation. Name of the database from which
  /// this backup was created. This needs to be in the same instance as the
  /// backup. Values are of the form `projects//instances//databases/`.
  core.String database;

  /// Required for the CreateBackup operation. The expiration time of the
  /// backup, with microseconds granularity that must be at least 6 hours and at
  /// most 366 days from the time the CreateBackup request is processed. Once
  /// the `expire_time` has passed, the backup is eligible to be automatically
  /// deleted by Cloud Spanner to free the resources used by the backup.
  core.String expireTime;

  /// Output only for the CreateBackup operation. Required for the UpdateBackup
  /// operation. A globally unique identifier for the backup which cannot be
  /// changed. Values are of the form
  /// `projects//instances//backups/a-z*[a-z0-9]` The final segment of the name
  /// must be between 2 and 60 characters in length. The backup is stored in the
  /// location(s) specified in the instance configuration of the instance
  /// containing the backup, identified by the prefix of the backup name of the
  /// form `projects//instances/`.
  core.String name;

  /// Output only. The names of the restored databases that reference the
  /// backup. The database names are of the form
  /// `projects//instances//databases/`. Referencing databases may exist in
  /// different instances. The existence of any referencing database prevents
  /// the backup from being deleted. When a restored database from the backup
  /// enters the `READY` state, the reference to the backup is removed.
  core.List<core.String> referencingDatabases;

  /// Output only. Size of the backup in bytes.
  core.String sizeBytes;

  /// Output only. The current state of the backup.
  /// Possible string values are:
  /// - "STATE_UNSPECIFIED" : Not specified.
  /// - "CREATING" : The pending backup is still being created. Operations on
  /// the backup may fail with `FAILED_PRECONDITION` in this state.
  /// - "READY" : The backup is complete and ready for use.
  core.String state;

  Backup();

  Backup.fromJson(core.Map _json) {
    if (_json.containsKey('createTime')) {
      createTime = _json['createTime'];
    }
    if (_json.containsKey('database')) {
      database = _json['database'];
    }
    if (_json.containsKey('expireTime')) {
      expireTime = _json['expireTime'];
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('referencingDatabases')) {
      referencingDatabases =
          (_json['referencingDatabases'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('sizeBytes')) {
      sizeBytes = _json['sizeBytes'];
    }
    if (_json.containsKey('state')) {
      state = _json['state'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (createTime != null) {
      _json['createTime'] = createTime;
    }
    if (database != null) {
      _json['database'] = database;
    }
    if (expireTime != null) {
      _json['expireTime'] = expireTime;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (referencingDatabases != null) {
      _json['referencingDatabases'] = referencingDatabases;
    }
    if (sizeBytes != null) {
      _json['sizeBytes'] = sizeBytes;
    }
    if (state != null) {
      _json['state'] = state;
    }
    return _json;
  }
}

/// Information about a backup.
class BackupInfo {
  /// Name of the backup.
  core.String backup;

  /// The backup contains an externally consistent copy of `source_database` at
  /// the timestamp specified by `create_time`.
  core.String createTime;

  /// Name of the database the backup was created from.
  core.String sourceDatabase;

  BackupInfo();

  BackupInfo.fromJson(core.Map _json) {
    if (_json.containsKey('backup')) {
      backup = _json['backup'];
    }
    if (_json.containsKey('createTime')) {
      createTime = _json['createTime'];
    }
    if (_json.containsKey('sourceDatabase')) {
      sourceDatabase = _json['sourceDatabase'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (backup != null) {
      _json['backup'] = backup;
    }
    if (createTime != null) {
      _json['createTime'] = createTime;
    }
    if (sourceDatabase != null) {
      _json['sourceDatabase'] = sourceDatabase;
    }
    return _json;
  }
}

/// The request for BatchCreateSessions.
class BatchCreateSessionsRequest {
  /// Required. The number of sessions to be created in this batch call. The API
  /// may return fewer than the requested number of sessions. If a specific
  /// number of sessions are desired, the client can make additional calls to
  /// BatchCreateSessions (adjusting session_count as necessary).
  core.int sessionCount;

  /// Parameters to be applied to each created session.
  Session sessionTemplate;

  BatchCreateSessionsRequest();

  BatchCreateSessionsRequest.fromJson(core.Map _json) {
    if (_json.containsKey('sessionCount')) {
      sessionCount = _json['sessionCount'];
    }
    if (_json.containsKey('sessionTemplate')) {
      sessionTemplate = Session.fromJson(_json['sessionTemplate']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (sessionCount != null) {
      _json['sessionCount'] = sessionCount;
    }
    if (sessionTemplate != null) {
      _json['sessionTemplate'] = sessionTemplate.toJson();
    }
    return _json;
  }
}

/// The response for BatchCreateSessions.
class BatchCreateSessionsResponse {
  /// The freshly created sessions.
  core.List<Session> session;

  BatchCreateSessionsResponse();

  BatchCreateSessionsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('session')) {
      session = (_json['session'] as core.List)
          .map<Session>((value) => Session.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (session != null) {
      _json['session'] = session.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// The request for BeginTransaction.
class BeginTransactionRequest {
  /// Required. Options for the new transaction.
  TransactionOptions options;

  BeginTransactionRequest();

  BeginTransactionRequest.fromJson(core.Map _json) {
    if (_json.containsKey('options')) {
      options = TransactionOptions.fromJson(_json['options']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (options != null) {
      _json['options'] = options.toJson();
    }
    return _json;
  }
}

/// Associates `members` with a `role`.
class Binding {
  /// A client-specified ID for this binding. Expected to be globally unique to
  /// support the internal bindings-by-ID API.
  core.String bindingId;

  /// The condition that is associated with this binding. If the condition
  /// evaluates to `true`, then this binding applies to the current request. If
  /// the condition evaluates to `false`, then this binding does not apply to
  /// the current request. However, a different role binding might grant the
  /// same role to one or more of the members in this binding. To learn which
  /// resources support conditions in their IAM policies, see the [IAM
  /// documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
  Expr condition;

  /// Specifies the identities requesting access for a Cloud Platform resource.
  /// `members` can have the following values: * `allUsers`: A special
  /// identifier that represents anyone who is on the internet; with or without
  /// a Google account. * `allAuthenticatedUsers`: A special identifier that
  /// represents anyone who is authenticated with a Google account or a service
  /// account. * `user:{emailid}`: An email address that represents a specific
  /// Google account. For example, `alice@example.com` . *
  /// `serviceAccount:{emailid}`: An email address that represents a service
  /// account. For example, `my-other-app@appspot.gserviceaccount.com`. *
  /// `group:{emailid}`: An email address that represents a Google group. For
  /// example, `admins@example.com`. * `deleted:user:{emailid}?uid={uniqueid}`:
  /// An email address (plus unique identifier) representing a user that has
  /// been recently deleted. For example,
  /// `alice@example.com?uid=123456789012345678901`. If the user is recovered,
  /// this value reverts to `user:{emailid}` and the recovered user retains the
  /// role in the binding. * `deleted:serviceAccount:{emailid}?uid={uniqueid}`:
  /// An email address (plus unique identifier) representing a service account
  /// that has been recently deleted. For example,
  /// `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`. If
  /// the service account is undeleted, this value reverts to
  /// `serviceAccount:{emailid}` and the undeleted service account retains the
  /// role in the binding. * `deleted:group:{emailid}?uid={uniqueid}`: An email
  /// address (plus unique identifier) representing a Google group that has been
  /// recently deleted. For example,
  /// `admins@example.com?uid=123456789012345678901`. If the group is recovered,
  /// this value reverts to `group:{emailid}` and the recovered group retains
  /// the role in the binding. * `domain:{domain}`: The G Suite domain (primary)
  /// that represents all the users of that domain. For example, `google.com` or
  /// `example.com`.
  core.List<core.String> members;

  /// Role that is assigned to `members`. For example, `roles/viewer`,
  /// `roles/editor`, or `roles/owner`.
  core.String role;

  Binding();

  Binding.fromJson(core.Map _json) {
    if (_json.containsKey('bindingId')) {
      bindingId = _json['bindingId'];
    }
    if (_json.containsKey('condition')) {
      condition = Expr.fromJson(_json['condition']);
    }
    if (_json.containsKey('members')) {
      members = (_json['members'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('role')) {
      role = _json['role'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (bindingId != null) {
      _json['bindingId'] = bindingId;
    }
    if (condition != null) {
      _json['condition'] = condition.toJson();
    }
    if (members != null) {
      _json['members'] = members;
    }
    if (role != null) {
      _json['role'] = role;
    }
    return _json;
  }
}

/// Metadata associated with a parent-child relationship appearing in a
/// PlanNode.
class ChildLink {
  /// The node to which the link points.
  core.int childIndex;

  /// The type of the link. For example, in Hash Joins this could be used to
  /// distinguish between the build child and the probe child, or in the case of
  /// the child being an output variable, to represent the tag associated with
  /// the output variable.
  core.String type;

  /// Only present if the child node is SCALAR and corresponds to an output
  /// variable of the parent node. The field carries the name of the output
  /// variable. For example, a `TableScan` operator that reads rows from a table
  /// will have child links to the `SCALAR` nodes representing the output
  /// variables created for each column that is read by the operator. The
  /// corresponding `variable` fields will be set to the variable names assigned
  /// to the columns.
  core.String variable;

  ChildLink();

  ChildLink.fromJson(core.Map _json) {
    if (_json.containsKey('childIndex')) {
      childIndex = _json['childIndex'];
    }
    if (_json.containsKey('type')) {
      type = _json['type'];
    }
    if (_json.containsKey('variable')) {
      variable = _json['variable'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (childIndex != null) {
      _json['childIndex'] = childIndex;
    }
    if (type != null) {
      _json['type'] = type;
    }
    if (variable != null) {
      _json['variable'] = variable;
    }
    return _json;
  }
}

/// The request for Commit.
class CommitRequest {
  /// The mutations to be executed when this transaction commits. All mutations
  /// are applied atomically, in the order they appear in this list.
  core.List<Mutation> mutations;

  /// Execute mutations in a temporary transaction. Note that unlike commit of a
  /// previously-started transaction, commit with a temporary transaction is
  /// non-idempotent. That is, if the `CommitRequest` is sent to Cloud Spanner
  /// more than once (for instance, due to retries in the application, or in the
  /// transport library), it is possible that the mutations are executed more
  /// than once. If this is undesirable, use BeginTransaction and Commit
  /// instead.
  TransactionOptions singleUseTransaction;

  /// Commit a previously-started transaction.
  core.String transactionId;
  core.List<core.int> get transactionIdAsBytes =>
      convert.base64.decode(transactionId);

  set transactionIdAsBytes(core.List<core.int> _bytes) {
    transactionId =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  CommitRequest();

  CommitRequest.fromJson(core.Map _json) {
    if (_json.containsKey('mutations')) {
      mutations = (_json['mutations'] as core.List)
          .map<Mutation>((value) => Mutation.fromJson(value))
          .toList();
    }
    if (_json.containsKey('singleUseTransaction')) {
      singleUseTransaction =
          TransactionOptions.fromJson(_json['singleUseTransaction']);
    }
    if (_json.containsKey('transactionId')) {
      transactionId = _json['transactionId'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (mutations != null) {
      _json['mutations'] = mutations.map((value) => value.toJson()).toList();
    }
    if (singleUseTransaction != null) {
      _json['singleUseTransaction'] = singleUseTransaction.toJson();
    }
    if (transactionId != null) {
      _json['transactionId'] = transactionId;
    }
    return _json;
  }
}

/// The response for Commit.
class CommitResponse {
  /// The Cloud Spanner timestamp at which the transaction committed.
  core.String commitTimestamp;

  CommitResponse();

  CommitResponse.fromJson(core.Map _json) {
    if (_json.containsKey('commitTimestamp')) {
      commitTimestamp = _json['commitTimestamp'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (commitTimestamp != null) {
      _json['commitTimestamp'] = commitTimestamp;
    }
    return _json;
  }
}

/// Metadata type for the operation returned by CreateBackup.
class CreateBackupMetadata {
  /// The time at which cancellation of this operation was received.
  /// Operations.CancelOperation starts asynchronous cancellation on a
  /// long-running operation. The server makes a best effort to cancel the
  /// operation, but success is not guaranteed. Clients can use
  /// Operations.GetOperation or other methods to check whether the cancellation
  /// succeeded or whether the operation completed despite cancellation. On
  /// successful cancellation, the operation is not deleted; instead, it becomes
  /// an operation with an Operation.error value with a google.rpc.Status.code
  /// of 1, corresponding to `Code.CANCELLED`.
  core.String cancelTime;

  /// The name of the database the backup is created from.
  core.String database;

  /// The name of the backup being created.
  core.String name;

  /// The progress of the CreateBackup operation.
  OperationProgress progress;

  CreateBackupMetadata();

  CreateBackupMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('cancelTime')) {
      cancelTime = _json['cancelTime'];
    }
    if (_json.containsKey('database')) {
      database = _json['database'];
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('progress')) {
      progress = OperationProgress.fromJson(_json['progress']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (cancelTime != null) {
      _json['cancelTime'] = cancelTime;
    }
    if (database != null) {
      _json['database'] = database;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (progress != null) {
      _json['progress'] = progress.toJson();
    }
    return _json;
  }
}

/// Metadata type for the operation returned by CreateDatabase.
class CreateDatabaseMetadata {
  /// The database being created.
  core.String database;

  CreateDatabaseMetadata();

  CreateDatabaseMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('database')) {
      database = _json['database'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (database != null) {
      _json['database'] = database;
    }
    return _json;
  }
}

/// The request for CreateDatabase.
class CreateDatabaseRequest {
  /// Required. A `CREATE DATABASE` statement, which specifies the ID of the new
  /// database. The database ID must conform to the regular expression
  /// `a-z*[a-z0-9]` and be between 2 and 30 characters in length. If the
  /// database ID is a reserved word or if it contains a hyphen, the database ID
  /// must be enclosed in backticks (`` ` ``).
  core.String createStatement;

  /// Optional. A list of DDL statements to run inside the newly created
  /// database. Statements can create tables, indexes, etc. These statements
  /// execute atomically with the creation of the database: if there is an error
  /// in any statement, the database is not created.
  core.List<core.String> extraStatements;

  CreateDatabaseRequest();

  CreateDatabaseRequest.fromJson(core.Map _json) {
    if (_json.containsKey('createStatement')) {
      createStatement = _json['createStatement'];
    }
    if (_json.containsKey('extraStatements')) {
      extraStatements =
          (_json['extraStatements'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (createStatement != null) {
      _json['createStatement'] = createStatement;
    }
    if (extraStatements != null) {
      _json['extraStatements'] = extraStatements;
    }
    return _json;
  }
}

/// Metadata type for the operation returned by CreateInstance.
class CreateInstanceMetadata {
  /// The time at which this operation was cancelled. If set, this operation is
  /// in the process of undoing itself (which is guaranteed to succeed) and
  /// cannot be cancelled again.
  core.String cancelTime;

  /// The time at which this operation failed or was completed successfully.
  core.String endTime;

  /// The instance being created.
  Instance instance;

  /// The time at which the CreateInstance request was received.
  core.String startTime;

  CreateInstanceMetadata();

  CreateInstanceMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('cancelTime')) {
      cancelTime = _json['cancelTime'];
    }
    if (_json.containsKey('endTime')) {
      endTime = _json['endTime'];
    }
    if (_json.containsKey('instance')) {
      instance = Instance.fromJson(_json['instance']);
    }
    if (_json.containsKey('startTime')) {
      startTime = _json['startTime'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (cancelTime != null) {
      _json['cancelTime'] = cancelTime;
    }
    if (endTime != null) {
      _json['endTime'] = endTime;
    }
    if (instance != null) {
      _json['instance'] = instance.toJson();
    }
    if (startTime != null) {
      _json['startTime'] = startTime;
    }
    return _json;
  }
}

/// The request for CreateInstance.
class CreateInstanceRequest {
  /// Required. The instance to create. The name may be omitted, but if
  /// specified must be `/instances/`.
  Instance instance;

  /// Required. The ID of the instance to create. Valid identifiers are of the
  /// form `a-z*[a-z0-9]` and must be between 2 and 64 characters in length.
  core.String instanceId;

  CreateInstanceRequest();

  CreateInstanceRequest.fromJson(core.Map _json) {
    if (_json.containsKey('instance')) {
      instance = Instance.fromJson(_json['instance']);
    }
    if (_json.containsKey('instanceId')) {
      instanceId = _json['instanceId'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (instance != null) {
      _json['instance'] = instance.toJson();
    }
    if (instanceId != null) {
      _json['instanceId'] = instanceId;
    }
    return _json;
  }
}

/// The request for CreateSession.
class CreateSessionRequest {
  /// Required. The session to create.
  Session session;

  CreateSessionRequest();

  CreateSessionRequest.fromJson(core.Map _json) {
    if (_json.containsKey('session')) {
      session = Session.fromJson(_json['session']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (session != null) {
      _json['session'] = session.toJson();
    }
    return _json;
  }
}

/// A Cloud Spanner database.
class Database {
  /// Output only. If exists, the time at which the database creation started.
  core.String createTime;

  /// Required. The name of the database. Values are of the form
  /// `projects//instances//databases/`, where `` is as specified in the `CREATE
  /// DATABASE` statement. This name can be passed to other API methods to
  /// identify the database.
  core.String name;

  /// Output only. Applicable only for restored databases. Contains information
  /// about the restore source.
  RestoreInfo restoreInfo;

  /// Output only. The current database state.
  /// Possible string values are:
  /// - "STATE_UNSPECIFIED" : Not specified.
  /// - "CREATING" : The database is still being created. Operations on the
  /// database may fail with `FAILED_PRECONDITION` in this state.
  /// - "READY" : The database is fully created and ready for use.
  /// - "READY_OPTIMIZING" : The database is fully created and ready for use,
  /// but is still being optimized for performance and cannot handle full load.
  /// In this state, the database still references the backup it was restore
  /// from, preventing the backup from being deleted. When optimizations are
  /// complete, the full performance of the database will be restored, and the
  /// database will transition to `READY` state.
  core.String state;

  Database();

  Database.fromJson(core.Map _json) {
    if (_json.containsKey('createTime')) {
      createTime = _json['createTime'];
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('restoreInfo')) {
      restoreInfo = RestoreInfo.fromJson(_json['restoreInfo']);
    }
    if (_json.containsKey('state')) {
      state = _json['state'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (createTime != null) {
      _json['createTime'] = createTime;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (restoreInfo != null) {
      _json['restoreInfo'] = restoreInfo.toJson();
    }
    if (state != null) {
      _json['state'] = state;
    }
    return _json;
  }
}

/// Arguments to delete operations.
class Delete {
  /// Required. The primary keys of the rows within table to delete. The primary
  /// keys must be specified in the order in which they appear in the `PRIMARY
  /// KEY()` clause of the table's equivalent DDL statement (the DDL statement
  /// used to create the table). Delete is idempotent. The transaction will
  /// succeed even if some or all rows do not exist.
  KeySet keySet;

  /// Required. The table whose rows will be deleted.
  core.String table;

  Delete();

  Delete.fromJson(core.Map _json) {
    if (_json.containsKey('keySet')) {
      keySet = KeySet.fromJson(_json['keySet']);
    }
    if (_json.containsKey('table')) {
      table = _json['table'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (keySet != null) {
      _json['keySet'] = keySet.toJson();
    }
    if (table != null) {
      _json['table'] = table;
    }
    return _json;
  }
}

/// A generic empty message that you can re-use to avoid defining duplicated
/// empty messages in your APIs. A typical example is to use it as the request
/// or the response type of an API method. For instance: service Foo { rpc
/// Bar(google.protobuf.Empty) returns (google.protobuf.Empty); } The JSON
/// representation for `Empty` is empty JSON object `{}`.
class Empty {
  Empty();

  Empty.fromJson(
      // ignore: avoid_unused_constructor_parameters
      core.Map _json);

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    return _json;
  }
}

/// The request for ExecuteBatchDml.
class ExecuteBatchDmlRequest {
  /// Required. A per-transaction sequence number used to identify this request.
  /// This field makes each request idempotent such that if the request is
  /// received multiple times, at most one will succeed. The sequence number
  /// must be monotonically increasing within the transaction. If a request
  /// arrives for the first time with an out-of-order sequence number, the
  /// transaction may be aborted. Replays of previously handled requests will
  /// yield the same response as the first execution.
  core.String seqno;

  /// Required. The list of statements to execute in this batch. Statements are
  /// executed serially, such that the effects of statement `i` are visible to
  /// statement `i+1`. Each statement must be a DML statement. Execution stops
  /// at the first failed statement; the remaining statements are not executed.
  /// Callers must provide at least one statement.
  core.List<Statement> statements;

  /// Required. The transaction to use. Must be a read-write transaction. To
  /// protect against replays, single-use transactions are not supported. The
  /// caller must either supply an existing transaction ID or begin a new
  /// transaction.
  TransactionSelector transaction;

  ExecuteBatchDmlRequest();

  ExecuteBatchDmlRequest.fromJson(core.Map _json) {
    if (_json.containsKey('seqno')) {
      seqno = _json['seqno'];
    }
    if (_json.containsKey('statements')) {
      statements = (_json['statements'] as core.List)
          .map<Statement>((value) => Statement.fromJson(value))
          .toList();
    }
    if (_json.containsKey('transaction')) {
      transaction = TransactionSelector.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (seqno != null) {
      _json['seqno'] = seqno;
    }
    if (statements != null) {
      _json['statements'] = statements.map((value) => value.toJson()).toList();
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// The response for ExecuteBatchDml. Contains a list of ResultSet messages, one
/// for each DML statement that has successfully executed, in the same order as
/// the statements in the request. If a statement fails, the status in the
/// response body identifies the cause of the failure. To check for DML
/// statements that failed, use the following approach: 1. Check the status in
/// the response message. The google.rpc.Code enum value `OK` indicates that all
/// statements were executed successfully. 2. If the status was not `OK`, check
/// the number of result sets in the response. If the response contains `N`
/// ResultSet messages, then statement `N+1` in the request failed. Example 1: *
/// Request: 5 DML statements, all executed successfully. * Response: 5
/// ResultSet messages, with the status `OK`. Example 2: * Request: 5 DML
/// statements. The third statement has a syntax error. * Response: 2 ResultSet
/// messages, and a syntax error (`INVALID_ARGUMENT`) status. The number of
/// ResultSet messages indicates that the third statement failed, and the fourth
/// and fifth statements were not executed.
class ExecuteBatchDmlResponse {
  /// One ResultSet for each statement in the request that ran successfully, in
  /// the same order as the statements in the request. Each ResultSet does not
  /// contain any rows. The ResultSetStats in each ResultSet contain the number
  /// of rows modified by the statement. Only the first ResultSet in the
  /// response contains valid ResultSetMetadata.
  core.List<ResultSet> resultSets;

  /// If all DML statements are executed successfully, the status is `OK`.
  /// Otherwise, the error status of the first failed statement.
  Status status;

  ExecuteBatchDmlResponse();

  ExecuteBatchDmlResponse.fromJson(core.Map _json) {
    if (_json.containsKey('resultSets')) {
      resultSets = (_json['resultSets'] as core.List)
          .map<ResultSet>((value) => ResultSet.fromJson(value))
          .toList();
    }
    if (_json.containsKey('status')) {
      status = Status.fromJson(_json['status']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (resultSets != null) {
      _json['resultSets'] = resultSets.map((value) => value.toJson()).toList();
    }
    if (status != null) {
      _json['status'] = status.toJson();
    }
    return _json;
  }
}

/// The request for ExecuteSql and ExecuteStreamingSql.
class ExecuteSqlRequest {
  /// It is not always possible for Cloud Spanner to infer the right SQL type
  /// from a JSON value. For example, values of type `BYTES` and values of type
  /// `STRING` both appear in params as JSON strings. In these cases,
  /// `param_types` can be used to specify the exact SQL type for some or all of
  /// the SQL statement parameters. See the definition of Type for more
  /// information about SQL types.
  core.Map<core.String, Type> paramTypes;

  /// Parameter names and values that bind to placeholders in the SQL string. A
  /// parameter placeholder consists of the `@` character followed by the
  /// parameter name (for example, `@firstName`). Parameter names must conform
  /// to the naming requirements of identifiers as specified at
  /// https://cloud.google.com/spanner/docs/lexical#identifiers. Parameters can
  /// appear anywhere that a literal value is expected. The same parameter name
  /// can be used more than once, for example: `"WHERE id > @msg_id AND id <
  /// @msg_id + 100"` It is an error to execute a SQL statement with unbound
  /// parameters.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> params;

  /// If present, results will be restricted to the specified partition
  /// previously created using PartitionQuery(). There must be an exact match
  /// for the values of fields common to this message and the
  /// PartitionQueryRequest message used to create this partition_token.
  core.String partitionToken;
  core.List<core.int> get partitionTokenAsBytes =>
      convert.base64.decode(partitionToken);

  set partitionTokenAsBytes(core.List<core.int> _bytes) {
    partitionToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// Used to control the amount of debugging information returned in
  /// ResultSetStats. If partition_token is set, query_mode can only be set to
  /// QueryMode.NORMAL.
  /// Possible string values are:
  /// - "NORMAL" : The default mode. Only the statement results are returned.
  /// - "PLAN" : This mode returns only the query plan, without any results or
  /// execution statistics information.
  /// - "PROFILE" : This mode returns both the query plan and the execution
  /// statistics along with the results.
  core.String queryMode;

  /// Query optimizer configuration to use for the given query.
  QueryOptions queryOptions;

  /// If this request is resuming a previously interrupted SQL statement
  /// execution, `resume_token` should be copied from the last PartialResultSet
  /// yielded before the interruption. Doing this enables the new SQL statement
  /// execution to resume where the last one left off. The rest of the request
  /// parameters must exactly match the request that yielded this token.
  core.String resumeToken;
  core.List<core.int> get resumeTokenAsBytes =>
      convert.base64.decode(resumeToken);

  set resumeTokenAsBytes(core.List<core.int> _bytes) {
    resumeToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// A per-transaction sequence number used to identify this request. This
  /// field makes each request idempotent such that if the request is received
  /// multiple times, at most one will succeed. The sequence number must be
  /// monotonically increasing within the transaction. If a request arrives for
  /// the first time with an out-of-order sequence number, the transaction may
  /// be aborted. Replays of previously handled requests will yield the same
  /// response as the first execution. Required for DML statements. Ignored for
  /// queries.
  core.String seqno;

  /// Required. The SQL string.
  core.String sql;

  /// The transaction to use. For queries, if none is provided, the default is a
  /// temporary read-only transaction with strong concurrency. Standard DML
  /// statements require a read-write transaction. To protect against replays,
  /// single-use transactions are not supported. The caller must either supply
  /// an existing transaction ID or begin a new transaction. Partitioned DML
  /// requires an existing Partitioned DML transaction ID.
  TransactionSelector transaction;

  ExecuteSqlRequest();

  ExecuteSqlRequest.fromJson(core.Map _json) {
    if (_json.containsKey('paramTypes')) {
      paramTypes = commons.mapMap<core.Map, Type>(
          _json['paramTypes'].cast<core.String, core.Map>(),
          (core.Map item) => Type.fromJson(item));
    }
    if (_json.containsKey('params')) {
      params = (_json['params'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('partitionToken')) {
      partitionToken = _json['partitionToken'];
    }
    if (_json.containsKey('queryMode')) {
      queryMode = _json['queryMode'];
    }
    if (_json.containsKey('queryOptions')) {
      queryOptions = QueryOptions.fromJson(_json['queryOptions']);
    }
    if (_json.containsKey('resumeToken')) {
      resumeToken = _json['resumeToken'];
    }
    if (_json.containsKey('seqno')) {
      seqno = _json['seqno'];
    }
    if (_json.containsKey('sql')) {
      sql = _json['sql'];
    }
    if (_json.containsKey('transaction')) {
      transaction = TransactionSelector.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (paramTypes != null) {
      _json['paramTypes'] =
          commons.mapMap<Type, core.Map<core.String, core.Object>>(
              paramTypes, (Type item) => item.toJson());
    }
    if (params != null) {
      _json['params'] = params;
    }
    if (partitionToken != null) {
      _json['partitionToken'] = partitionToken;
    }
    if (queryMode != null) {
      _json['queryMode'] = queryMode;
    }
    if (queryOptions != null) {
      _json['queryOptions'] = queryOptions.toJson();
    }
    if (resumeToken != null) {
      _json['resumeToken'] = resumeToken;
    }
    if (seqno != null) {
      _json['seqno'] = seqno;
    }
    if (sql != null) {
      _json['sql'] = sql;
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// Represents a textual expression in the Common Expression Language (CEL)
/// syntax. CEL is a C-like expression language. The syntax and semantics of CEL
/// are documented at https://github.com/google/cel-spec. Example (Comparison):
/// title: "Summary size limit" description: "Determines if a summary is less
/// than 100 chars" expression: "document.summary.size() < 100" Example
/// (Equality): title: "Requestor is owner" description: "Determines if
/// requestor is the document owner" expression: "document.owner ==
/// request.auth.claims.email" Example (Logic): title: "Public documents"
/// description: "Determine whether the document should be publicly visible"
/// expression: "document.type != 'private' && document.type != 'internal'"
/// Example (Data Manipulation): title: "Notification string" description:
/// "Create a notification string with a timestamp." expression: "'New message
/// received at ' + string(document.create_time)" The exact variables and
/// functions that may be referenced within an expression are determined by the
/// service that evaluates it. See the service documentation for additional
/// information.
class Expr {
  /// Optional. Description of the expression. This is a longer text which
  /// describes the expression, e.g. when hovered over it in a UI.
  core.String description;

  /// Textual representation of an expression in Common Expression Language
  /// syntax.
  core.String expression;

  /// Optional. String indicating the location of the expression for error
  /// reporting, e.g. a file name and a position in the file.
  core.String location;

  /// Optional. Title for the expression, i.e. a short string describing its
  /// purpose. This can be used e.g. in UIs which allow to enter the expression.
  core.String title;

  Expr();

  Expr.fromJson(core.Map _json) {
    if (_json.containsKey('description')) {
      description = _json['description'];
    }
    if (_json.containsKey('expression')) {
      expression = _json['expression'];
    }
    if (_json.containsKey('location')) {
      location = _json['location'];
    }
    if (_json.containsKey('title')) {
      title = _json['title'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (description != null) {
      _json['description'] = description;
    }
    if (expression != null) {
      _json['expression'] = expression;
    }
    if (location != null) {
      _json['location'] = location;
    }
    if (title != null) {
      _json['title'] = title;
    }
    return _json;
  }
}

/// Message representing a single field of a struct.
class Field {
  /// The name of the field. For reads, this is the column name. For SQL
  /// queries, it is the column alias (e.g., `"Word"` in the query `"SELECT
  /// 'hello' AS Word"`), or the column name (e.g., `"ColName"` in the query
  /// `"SELECT ColName FROM Table"`). Some columns might have an empty name
  /// (e.g., !"SELECT UPPER(ColName)"`). Note that a query result can contain
  /// multiple fields with the same name.
  core.String name;

  /// The type of the field.
  Type type;

  Field();

  Field.fromJson(core.Map _json) {
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('type')) {
      type = Type.fromJson(_json['type']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (name != null) {
      _json['name'] = name;
    }
    if (type != null) {
      _json['type'] = type.toJson();
    }
    return _json;
  }
}

/// The response for GetDatabaseDdl.
class GetDatabaseDdlResponse {
  /// A list of formatted DDL statements defining the schema of the database
  /// specified in the request.
  core.List<core.String> statements;

  GetDatabaseDdlResponse();

  GetDatabaseDdlResponse.fromJson(core.Map _json) {
    if (_json.containsKey('statements')) {
      statements = (_json['statements'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (statements != null) {
      _json['statements'] = statements;
    }
    return _json;
  }
}

/// Request message for `GetIamPolicy` method.
class GetIamPolicyRequest {
  /// OPTIONAL: A `GetPolicyOptions` object for specifying options to
  /// `GetIamPolicy`.
  GetPolicyOptions options;

  GetIamPolicyRequest();

  GetIamPolicyRequest.fromJson(core.Map _json) {
    if (_json.containsKey('options')) {
      options = GetPolicyOptions.fromJson(_json['options']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (options != null) {
      _json['options'] = options.toJson();
    }
    return _json;
  }
}

/// Encapsulates settings provided to GetIamPolicy.
class GetPolicyOptions {
  /// Optional. The policy format version to be returned. Valid values are 0, 1,
  /// and 3. Requests specifying an invalid value will be rejected. Requests for
  /// policies with any conditional bindings must specify version 3. Policies
  /// without any conditional bindings may specify any valid value or leave the
  /// field unset. To learn which resources support conditions in their IAM
  /// policies, see the [IAM
  /// documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
  core.int requestedPolicyVersion;

  GetPolicyOptions();

  GetPolicyOptions.fromJson(core.Map _json) {
    if (_json.containsKey('requestedPolicyVersion')) {
      requestedPolicyVersion = _json['requestedPolicyVersion'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (requestedPolicyVersion != null) {
      _json['requestedPolicyVersion'] = requestedPolicyVersion;
    }
    return _json;
  }
}

/// An isolated set of Cloud Spanner resources on which databases can be hosted.
class Instance {
  /// Required. The name of the instance's configuration. Values are of the form
  /// `projects//instanceConfigs/`. See also InstanceConfig and
  /// ListInstanceConfigs.
  core.String config;

  /// Required. The descriptive name for this instance as it appears in UIs.
  /// Must be unique per project and between 4 and 30 characters in length.
  core.String displayName;

  /// Deprecated. This field is not populated.
  core.List<core.String> endpointUris;

  /// Cloud Labels are a flexible and lightweight mechanism for organizing cloud
  /// resources into groups that reflect a customer's organizational needs and
  /// deployment strategies. Cloud Labels can be used to filter collections of
  /// resources. They can be used to control how resource metrics are
  /// aggregated. And they can be used as arguments to policy management rules
  /// (e.g. route, firewall, load balancing, etc.). * Label keys must be between
  /// 1 and 63 characters long and must conform to the following regular
  /// expression: `[a-z]([-a-z0-9]*[a-z0-9])?`. * Label values must be between 0
  /// and 63 characters long and must conform to the regular expression
  /// `([a-z]([-a-z0-9]*[a-z0-9])?)?`. * No more than 64 labels can be
  /// associated with a given resource. See https://goo.gl/xmQnxf for more
  /// information on and examples of labels. If you plan to use labels in your
  /// own code, please note that additional characters may be allowed in the
  /// future. And so you are advised to use an internal label representation,
  /// such as JSON, which doesn't rely upon specific characters being
  /// disallowed. For example, representing labels as the string: name + "_" +
  /// value would prove problematic if we were to allow "_" in a future release.
  core.Map<core.String, core.String> labels;

  /// Required. A unique identifier for the instance, which cannot be changed
  /// after the instance is created. Values are of the form
  /// `projects//instances/a-z*[a-z0-9]`. The final segment of the name must be
  /// between 2 and 64 characters in length.
  core.String name;

  /// The number of nodes allocated to this instance. This may be zero in API
  /// responses for instances that are not yet in state `READY`. See [the
  /// documentation](https://cloud.google.com/spanner/docs/instances#node_count)
  /// for more information about nodes.
  core.int nodeCount;

  /// Output only. The current instance state. For CreateInstance, the state
  /// must be either omitted or set to `CREATING`. For UpdateInstance, the state
  /// must be either omitted or set to `READY`.
  /// Possible string values are:
  /// - "STATE_UNSPECIFIED" : Not specified.
  /// - "CREATING" : The instance is still being created. Resources may not be
  /// available yet, and operations such as database creation may not work.
  /// - "READY" : The instance is fully created and ready to do work such as
  /// creating databases.
  core.String state;

  Instance();

  Instance.fromJson(core.Map _json) {
    if (_json.containsKey('config')) {
      config = _json['config'];
    }
    if (_json.containsKey('displayName')) {
      displayName = _json['displayName'];
    }
    if (_json.containsKey('endpointUris')) {
      endpointUris = (_json['endpointUris'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('labels')) {
      labels = (_json['labels'] as core.Map).cast<core.String, core.String>();
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('nodeCount')) {
      nodeCount = _json['nodeCount'];
    }
    if (_json.containsKey('state')) {
      state = _json['state'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (config != null) {
      _json['config'] = config;
    }
    if (displayName != null) {
      _json['displayName'] = displayName;
    }
    if (endpointUris != null) {
      _json['endpointUris'] = endpointUris;
    }
    if (labels != null) {
      _json['labels'] = labels;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (nodeCount != null) {
      _json['nodeCount'] = nodeCount;
    }
    if (state != null) {
      _json['state'] = state;
    }
    return _json;
  }
}

/// A possible configuration for a Cloud Spanner instance. Configurations define
/// the geographic placement of nodes and their replication.
class InstanceConfig {
  /// The name of this instance configuration as it appears in UIs.
  core.String displayName;

  /// A unique identifier for the instance configuration. Values are of the form
  /// `projects//instanceConfigs/a-z*`
  core.String name;

  /// The geographic placement of nodes in this instance configuration and their
  /// replication properties.
  core.List<ReplicaInfo> replicas;

  InstanceConfig();

  InstanceConfig.fromJson(core.Map _json) {
    if (_json.containsKey('displayName')) {
      displayName = _json['displayName'];
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('replicas')) {
      replicas = (_json['replicas'] as core.List)
          .map<ReplicaInfo>((value) => ReplicaInfo.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (displayName != null) {
      _json['displayName'] = displayName;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (replicas != null) {
      _json['replicas'] = replicas.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// KeyRange represents a range of rows in a table or index. A range has a start
/// key and an end key. These keys can be open or closed, indicating if the
/// range includes rows with that key. Keys are represented by lists, where the
/// ith value in the list corresponds to the ith component of the table or index
/// primary key. Individual values are encoded as described here. For example,
/// consider the following table definition: CREATE TABLE UserEvents ( UserName
/// STRING(MAX), EventDate STRING(10) ) PRIMARY KEY(UserName, EventDate); The
/// following keys name rows in this table: "Bob", "2014-09-23" Since the
/// `UserEvents` table's `PRIMARY KEY` clause names two columns, each
/// `UserEvents` key has two elements; the first is the `UserName`, and the
/// second is the `EventDate`. Key ranges with multiple components are
/// interpreted lexicographically by component using the table or index key's
/// declared sort order. For example, the following range returns all events for
/// user `"Bob"` that occurred in the year 2015: "start_closed": ["Bob",
/// "2015-01-01"] "end_closed": ["Bob", "2015-12-31"] Start and end keys can
/// omit trailing key components. This affects the inclusion and exclusion of
/// rows that exactly match the provided key components: if the key is closed,
/// then rows that exactly match the provided components are included; if the
/// key is open, then rows that exactly match are not included. For example, the
/// following range includes all events for `"Bob"` that occurred during and
/// after the year 2000: "start_closed": ["Bob", "2000-01-01"] "end_closed":
/// ["Bob"] The next example retrieves all events for `"Bob"`: "start_closed":
/// ["Bob"] "end_closed": ["Bob"] To retrieve events before the year 2000:
/// "start_closed": ["Bob"] "end_open": ["Bob", "2000-01-01"] The following
/// range includes all rows in the table: "start_closed": [] "end_closed": []
/// This range returns all users whose `UserName` begins with any character from
/// A to C: "start_closed": ["A"] "end_open": ["D"] This range returns all users
/// whose `UserName` begins with B: "start_closed": ["B"] "end_open": ["C"] Key
/// ranges honor column sort order. For example, suppose a table is defined as
/// follows: CREATE TABLE DescendingSortedTable { Key INT64, ... ) PRIMARY
/// KEY(Key DESC); The following range retrieves all rows with key values
/// between 1 and 100 inclusive: "start_closed": ["100"] "end_closed": ["1"]
/// Note that 100 is passed as the start, and 1 is passed as the end, because
/// `Key` is a descending column in the schema.
class KeyRange {
  /// If the end is closed, then the range includes all rows whose first
  /// `len(end_closed)` key columns exactly match `end_closed`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Object> endClosed;

  /// If the end is open, then the range excludes rows whose first
  /// `len(end_open)` key columns exactly match `end_open`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Object> endOpen;

  /// If the start is closed, then the range includes all rows whose first
  /// `len(start_closed)` key columns exactly match `start_closed`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Object> startClosed;

  /// If the start is open, then the range excludes rows whose first
  /// `len(start_open)` key columns exactly match `start_open`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Object> startOpen;

  KeyRange();

  KeyRange.fromJson(core.Map _json) {
    if (_json.containsKey('endClosed')) {
      endClosed = (_json['endClosed'] as core.List).cast<core.Object>();
    }
    if (_json.containsKey('endOpen')) {
      endOpen = (_json['endOpen'] as core.List).cast<core.Object>();
    }
    if (_json.containsKey('startClosed')) {
      startClosed = (_json['startClosed'] as core.List).cast<core.Object>();
    }
    if (_json.containsKey('startOpen')) {
      startOpen = (_json['startOpen'] as core.List).cast<core.Object>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (endClosed != null) {
      _json['endClosed'] = endClosed;
    }
    if (endOpen != null) {
      _json['endOpen'] = endOpen;
    }
    if (startClosed != null) {
      _json['startClosed'] = startClosed;
    }
    if (startOpen != null) {
      _json['startOpen'] = startOpen;
    }
    return _json;
  }
}

/// `KeySet` defines a collection of Cloud Spanner keys and/or key ranges. All
/// the keys are expected to be in the same table or index. The keys need not be
/// sorted in any particular way. If the same key is specified multiple times in
/// the set (for example if two ranges, two keys, or a key and a range overlap),
/// Cloud Spanner behaves as if the key were only specified once.
class KeySet {
  /// For convenience `all` can be set to `true` to indicate that this `KeySet`
  /// matches all keys in the table or index. Note that any keys specified in
  /// `keys` or `ranges` are only yielded once.
  core.bool all;

  /// A list of specific keys. Entries in `keys` should have exactly as many
  /// elements as there are columns in the primary or index key with which this
  /// `KeySet` is used. Individual key values are encoded as described here.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.List<core.Object>> keys;

  /// A list of key ranges. See KeyRange for more information about key range
  /// specifications.
  core.List<KeyRange> ranges;

  KeySet();

  KeySet.fromJson(core.Map _json) {
    if (_json.containsKey('all')) {
      all = _json['all'];
    }
    if (_json.containsKey('keys')) {
      keys = (_json['keys'] as core.List)
          .map<core.List<core.Object>>(
              (value) => (value as core.List).cast<core.Object>())
          .toList();
    }
    if (_json.containsKey('ranges')) {
      ranges = (_json['ranges'] as core.List)
          .map<KeyRange>((value) => KeyRange.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (all != null) {
      _json['all'] = all;
    }
    if (keys != null) {
      _json['keys'] = keys;
    }
    if (ranges != null) {
      _json['ranges'] = ranges.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// The response for ListBackupOperations.
class ListBackupOperationsResponse {
  /// `next_page_token` can be sent in a subsequent ListBackupOperations call to
  /// fetch more of the matching metadata.
  core.String nextPageToken;

  /// The list of matching backup long-running operations. Each operation's name
  /// will be prefixed by the backup's name and the operation's metadata will be
  /// of type CreateBackupMetadata. Operations returned include those that are
  /// pending or have completed/failed/canceled within the last 7 days.
  /// Operations returned are ordered by
  /// `operation.metadata.value.progress.start_time` in descending order
  /// starting from the most recently started operation.
  core.List<Operation> operations;

  ListBackupOperationsResponse();

  ListBackupOperationsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
    if (_json.containsKey('operations')) {
      operations = (_json['operations'] as core.List)
          .map<Operation>((value) => Operation.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    if (operations != null) {
      _json['operations'] = operations.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// The response for ListBackups.
class ListBackupsResponse {
  /// The list of matching backups. Backups returned are ordered by
  /// `create_time` in descending order, starting from the most recent
  /// `create_time`.
  core.List<Backup> backups;

  /// `next_page_token` can be sent in a subsequent ListBackups call to fetch
  /// more of the matching backups.
  core.String nextPageToken;

  ListBackupsResponse();

  ListBackupsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('backups')) {
      backups = (_json['backups'] as core.List)
          .map<Backup>((value) => Backup.fromJson(value))
          .toList();
    }
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (backups != null) {
      _json['backups'] = backups.map((value) => value.toJson()).toList();
    }
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    return _json;
  }
}

/// The response for ListDatabaseOperations.
class ListDatabaseOperationsResponse {
  /// `next_page_token` can be sent in a subsequent ListDatabaseOperations call
  /// to fetch more of the matching metadata.
  core.String nextPageToken;

  /// The list of matching database long-running operations. Each operation's
  /// name will be prefixed by the database's name. The operation's metadata
  /// field type `metadata.type_url` describes the type of the metadata.
  core.List<Operation> operations;

  ListDatabaseOperationsResponse();

  ListDatabaseOperationsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
    if (_json.containsKey('operations')) {
      operations = (_json['operations'] as core.List)
          .map<Operation>((value) => Operation.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    if (operations != null) {
      _json['operations'] = operations.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// The response for ListDatabases.
class ListDatabasesResponse {
  /// Databases that matched the request.
  core.List<Database> databases;

  /// `next_page_token` can be sent in a subsequent ListDatabases call to fetch
  /// more of the matching databases.
  core.String nextPageToken;

  ListDatabasesResponse();

  ListDatabasesResponse.fromJson(core.Map _json) {
    if (_json.containsKey('databases')) {
      databases = (_json['databases'] as core.List)
          .map<Database>((value) => Database.fromJson(value))
          .toList();
    }
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (databases != null) {
      _json['databases'] = databases.map((value) => value.toJson()).toList();
    }
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    return _json;
  }
}

/// The response for ListInstanceConfigs.
class ListInstanceConfigsResponse {
  /// The list of requested instance configurations.
  core.List<InstanceConfig> instanceConfigs;

  /// `next_page_token` can be sent in a subsequent ListInstanceConfigs call to
  /// fetch more of the matching instance configurations.
  core.String nextPageToken;

  ListInstanceConfigsResponse();

  ListInstanceConfigsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('instanceConfigs')) {
      instanceConfigs = (_json['instanceConfigs'] as core.List)
          .map<InstanceConfig>((value) => InstanceConfig.fromJson(value))
          .toList();
    }
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (instanceConfigs != null) {
      _json['instanceConfigs'] =
          instanceConfigs.map((value) => value.toJson()).toList();
    }
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    return _json;
  }
}

/// The response for ListInstances.
class ListInstancesResponse {
  /// The list of requested instances.
  core.List<Instance> instances;

  /// `next_page_token` can be sent in a subsequent ListInstances call to fetch
  /// more of the matching instances.
  core.String nextPageToken;

  ListInstancesResponse();

  ListInstancesResponse.fromJson(core.Map _json) {
    if (_json.containsKey('instances')) {
      instances = (_json['instances'] as core.List)
          .map<Instance>((value) => Instance.fromJson(value))
          .toList();
    }
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (instances != null) {
      _json['instances'] = instances.map((value) => value.toJson()).toList();
    }
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    return _json;
  }
}

/// The response message for Operations.ListOperations.
class ListOperationsResponse {
  /// The standard List next-page token.
  core.String nextPageToken;

  /// A list of operations that matches the specified filter in the request.
  core.List<Operation> operations;

  ListOperationsResponse();

  ListOperationsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
    if (_json.containsKey('operations')) {
      operations = (_json['operations'] as core.List)
          .map<Operation>((value) => Operation.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    if (operations != null) {
      _json['operations'] = operations.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// The response for ListSessions.
class ListSessionsResponse {
  /// `next_page_token` can be sent in a subsequent ListSessions call to fetch
  /// more of the matching sessions.
  core.String nextPageToken;

  /// The list of requested sessions.
  core.List<Session> sessions;

  ListSessionsResponse();

  ListSessionsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('nextPageToken')) {
      nextPageToken = _json['nextPageToken'];
    }
    if (_json.containsKey('sessions')) {
      sessions = (_json['sessions'] as core.List)
          .map<Session>((value) => Session.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (nextPageToken != null) {
      _json['nextPageToken'] = nextPageToken;
    }
    if (sessions != null) {
      _json['sessions'] = sessions.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// A modification to one or more Cloud Spanner rows. Mutations can be applied
/// to a Cloud Spanner database by sending them in a Commit call.
class Mutation {
  /// Delete rows from a table. Succeeds whether or not the named rows were
  /// present.
  Delete delete;

  /// Insert new rows in a table. If any of the rows already exist, the write or
  /// transaction fails with error `ALREADY_EXISTS`.
  Write insert;

  /// Like insert, except that if the row already exists, then its column values
  /// are overwritten with the ones provided. Any column values not explicitly
  /// written are preserved. When using insert_or_update, just as when using
  /// insert, all `NOT NULL` columns in the table must be given a value. This
  /// holds true even when the row already exists and will therefore actually be
  /// updated.
  Write insertOrUpdate;

  /// Like insert, except that if the row already exists, it is deleted, and the
  /// column values provided are inserted instead. Unlike insert_or_update, this
  /// means any values not explicitly written become `NULL`. In an interleaved
  /// table, if you create the child table with the `ON DELETE CASCADE`
  /// annotation, then replacing a parent row also deletes the child rows.
  /// Otherwise, you must delete the child rows before you replace the parent
  /// row.
  Write replace;

  /// Update existing rows in a table. If any of the rows does not already
  /// exist, the transaction fails with error `NOT_FOUND`.
  Write update;

  Mutation();

  Mutation.fromJson(core.Map _json) {
    if (_json.containsKey('delete')) {
      delete = Delete.fromJson(_json['delete']);
    }
    if (_json.containsKey('insert')) {
      insert = Write.fromJson(_json['insert']);
    }
    if (_json.containsKey('insertOrUpdate')) {
      insertOrUpdate = Write.fromJson(_json['insertOrUpdate']);
    }
    if (_json.containsKey('replace')) {
      replace = Write.fromJson(_json['replace']);
    }
    if (_json.containsKey('update')) {
      update = Write.fromJson(_json['update']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (delete != null) {
      _json['delete'] = delete.toJson();
    }
    if (insert != null) {
      _json['insert'] = insert.toJson();
    }
    if (insertOrUpdate != null) {
      _json['insertOrUpdate'] = insertOrUpdate.toJson();
    }
    if (replace != null) {
      _json['replace'] = replace.toJson();
    }
    if (update != null) {
      _json['update'] = update.toJson();
    }
    return _json;
  }
}

/// This resource represents a long-running operation that is the result of a
/// network API call.
class Operation {
  /// If the value is `false`, it means the operation is still in progress. If
  /// `true`, the operation is completed, and either `error` or `response` is
  /// available.
  core.bool done;

  /// The error result of the operation in case of failure or cancellation.
  Status error;

  /// Service-specific metadata associated with the operation. It typically
  /// contains progress information and common metadata such as create time.
  /// Some services might not provide such metadata. Any method that returns a
  /// long-running operation should document the metadata type, if any.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> metadata;

  /// The server-assigned name, which is only unique within the same service
  /// that originally returns it. If you use the default HTTP mapping, the
  /// `name` should be a resource name ending with `operations/{unique_id}`.
  core.String name;

  /// The normal response of the operation in case of success. If the original
  /// method returns no data on success, such as `Delete`, the response is
  /// `google.protobuf.Empty`. If the original method is standard
  /// `Get`/`Create`/`Update`, the response should be the resource. For other
  /// methods, the response should have the type `XxxResponse`, where `Xxx` is
  /// the original method name. For example, if the original method name is
  /// `TakeSnapshot()`, the inferred response type is `TakeSnapshotResponse`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> response;

  Operation();

  Operation.fromJson(core.Map _json) {
    if (_json.containsKey('done')) {
      done = _json['done'];
    }
    if (_json.containsKey('error')) {
      error = Status.fromJson(_json['error']);
    }
    if (_json.containsKey('metadata')) {
      metadata =
          (_json['metadata'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('response')) {
      response =
          (_json['response'] as core.Map).cast<core.String, core.Object>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (done != null) {
      _json['done'] = done;
    }
    if (error != null) {
      _json['error'] = error.toJson();
    }
    if (metadata != null) {
      _json['metadata'] = metadata;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (response != null) {
      _json['response'] = response;
    }
    return _json;
  }
}

/// Encapsulates progress related information for a Cloud Spanner long running
/// operation.
class OperationProgress {
  /// If set, the time at which this operation failed or was completed
  /// successfully.
  core.String endTime;

  /// Percent completion of the operation. Values are between 0 and 100
  /// inclusive.
  core.int progressPercent;

  /// Time the request was received.
  core.String startTime;

  OperationProgress();

  OperationProgress.fromJson(core.Map _json) {
    if (_json.containsKey('endTime')) {
      endTime = _json['endTime'];
    }
    if (_json.containsKey('progressPercent')) {
      progressPercent = _json['progressPercent'];
    }
    if (_json.containsKey('startTime')) {
      startTime = _json['startTime'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (endTime != null) {
      _json['endTime'] = endTime;
    }
    if (progressPercent != null) {
      _json['progressPercent'] = progressPercent;
    }
    if (startTime != null) {
      _json['startTime'] = startTime;
    }
    return _json;
  }
}

/// Metadata type for the long-running operation used to track the progress of
/// optimizations performed on a newly restored database. This long-running
/// operation is automatically created by the system after the successful
/// completion of a database restore, and cannot be cancelled.
class OptimizeRestoredDatabaseMetadata {
  /// Name of the restored database being optimized.
  core.String name;

  /// The progress of the post-restore optimizations.
  OperationProgress progress;

  OptimizeRestoredDatabaseMetadata();

  OptimizeRestoredDatabaseMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('progress')) {
      progress = OperationProgress.fromJson(_json['progress']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (name != null) {
      _json['name'] = name;
    }
    if (progress != null) {
      _json['progress'] = progress.toJson();
    }
    return _json;
  }
}

/// Partial results from a streaming read or SQL query. Streaming reads and SQL
/// queries better tolerate large result sets, large rows, and large values, but
/// are a little trickier to consume.
class PartialResultSet {
  /// If true, then the final value in values is chunked, and must be combined
  /// with more values from subsequent `PartialResultSet`s to obtain a complete
  /// field value.
  core.bool chunkedValue;

  /// Metadata about the result set, such as row type information. Only present
  /// in the first response.
  ResultSetMetadata metadata;

  /// Streaming calls might be interrupted for a variety of reasons, such as TCP
  /// connection loss. If this occurs, the stream of results can be resumed by
  /// re-sending the original request and including `resume_token`. Note that
  /// executing any other transaction in the same session invalidates the token.
  core.String resumeToken;
  core.List<core.int> get resumeTokenAsBytes =>
      convert.base64.decode(resumeToken);

  set resumeTokenAsBytes(core.List<core.int> _bytes) {
    resumeToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// Query plan and execution statistics for the statement that produced this
  /// streaming result set. These can be requested by setting
  /// ExecuteSqlRequest.query_mode and are sent only once with the last response
  /// in the stream. This field will also be present in the last response for
  /// DML statements.
  ResultSetStats stats;

  /// A streamed result set consists of a stream of values, which might be split
  /// into many `PartialResultSet` messages to accommodate large rows and/or
  /// large values. Every N complete values defines a row, where N is equal to
  /// the number of entries in metadata.row_type.fields. Most values are encoded
  /// based on type as described here. It is possible that the last value in
  /// values is "chunked", meaning that the rest of the value is sent in
  /// subsequent `PartialResultSet`(s). This is denoted by the chunked_value
  /// field. Two or more chunked values can be merged to form a complete value
  /// as follows: * `bool/number/null`: cannot be chunked * `string`:
  /// concatenate the strings * `list`: concatenate the lists. If the last
  /// element in a list is a `string`, `list`, or `object`, merge it with the
  /// first element in the next list by applying these rules recursively. *
  /// `object`: concatenate the (field name, field value) pairs. If a field name
  /// is duplicated, then apply these rules recursively to merge the field
  /// values. Some examples of merging: # Strings are concatenated. "foo", "bar"
  /// => "foobar" # Lists of non-strings are concatenated. [2, 3], [4] => [2, 3,
  /// 4] # Lists are concatenated, but the last and first elements are merged #
  /// because they are strings. ["a", "b"], ["c", "d"] => ["a", "bc", "d"] #
  /// Lists are concatenated, but the last and first elements are merged #
  /// because they are lists. Recursively, the last and first elements # of the
  /// inner lists are merged because they are strings. ["a", ["b", "c"]],
  /// [["d"], "e"] => ["a", ["b", "cd"], "e"] # Non-overlapping object fields
  /// are combined. {"a": "1"}, {"b": "2"} => {"a": "1", "b": 2"} # Overlapping
  /// object fields are merged. {"a": "1"}, {"a": "2"} => {"a": "12"} # Examples
  /// of merging objects containing lists of strings. {"a": ["1"]}, {"a": ["2"]}
  /// => {"a": ["12"]} For a more complete example, suppose a streaming SQL
  /// query is yielding a result set whose rows contain a single string field.
  /// The following `PartialResultSet`s might be yielded: { "metadata": { ... }
  /// "values": ["Hello", "W"] "chunked_value": true "resume_token": "Af65..." }
  /// { "values": ["orl"] "chunked_value": true "resume_token": "Bqp2..." } {
  /// "values": ["d"] "resume_token": "Zx1B..." } This sequence of
  /// `PartialResultSet`s encodes two rows, one containing the field value
  /// `"Hello"`, and a second containing the field value `"World" = "W" + "orl"
  /// + "d"`.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Object> values;

  PartialResultSet();

  PartialResultSet.fromJson(core.Map _json) {
    if (_json.containsKey('chunkedValue')) {
      chunkedValue = _json['chunkedValue'];
    }
    if (_json.containsKey('metadata')) {
      metadata = ResultSetMetadata.fromJson(_json['metadata']);
    }
    if (_json.containsKey('resumeToken')) {
      resumeToken = _json['resumeToken'];
    }
    if (_json.containsKey('stats')) {
      stats = ResultSetStats.fromJson(_json['stats']);
    }
    if (_json.containsKey('values')) {
      values = (_json['values'] as core.List).cast<core.Object>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (chunkedValue != null) {
      _json['chunkedValue'] = chunkedValue;
    }
    if (metadata != null) {
      _json['metadata'] = metadata.toJson();
    }
    if (resumeToken != null) {
      _json['resumeToken'] = resumeToken;
    }
    if (stats != null) {
      _json['stats'] = stats.toJson();
    }
    if (values != null) {
      _json['values'] = values;
    }
    return _json;
  }
}

/// Information returned for each partition returned in a PartitionResponse.
class Partition {
  /// This token can be passed to Read, StreamingRead, ExecuteSql, or
  /// ExecuteStreamingSql requests to restrict the results to those identified
  /// by this partition token.
  core.String partitionToken;
  core.List<core.int> get partitionTokenAsBytes =>
      convert.base64.decode(partitionToken);

  set partitionTokenAsBytes(core.List<core.int> _bytes) {
    partitionToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  Partition();

  Partition.fromJson(core.Map _json) {
    if (_json.containsKey('partitionToken')) {
      partitionToken = _json['partitionToken'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (partitionToken != null) {
      _json['partitionToken'] = partitionToken;
    }
    return _json;
  }
}

/// Options for a PartitionQueryRequest and PartitionReadRequest.
class PartitionOptions {
  /// **Note:** This hint is currently ignored by PartitionQuery and
  /// PartitionRead requests. The desired maximum number of partitions to
  /// return. For example, this may be set to the number of workers available.
  /// The default for this option is currently 10,000. The maximum value is
  /// currently 200,000. This is only a hint. The actual number of partitions
  /// returned may be smaller or larger than this maximum count request.
  core.String maxPartitions;

  /// **Note:** This hint is currently ignored by PartitionQuery and
  /// PartitionRead requests. The desired data size for each partition
  /// generated. The default for this option is currently 1 GiB. This is only a
  /// hint. The actual size of each partition may be smaller or larger than this
  /// size request.
  core.String partitionSizeBytes;

  PartitionOptions();

  PartitionOptions.fromJson(core.Map _json) {
    if (_json.containsKey('maxPartitions')) {
      maxPartitions = _json['maxPartitions'];
    }
    if (_json.containsKey('partitionSizeBytes')) {
      partitionSizeBytes = _json['partitionSizeBytes'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (maxPartitions != null) {
      _json['maxPartitions'] = maxPartitions;
    }
    if (partitionSizeBytes != null) {
      _json['partitionSizeBytes'] = partitionSizeBytes;
    }
    return _json;
  }
}

/// The request for PartitionQuery
class PartitionQueryRequest {
  /// It is not always possible for Cloud Spanner to infer the right SQL type
  /// from a JSON value. For example, values of type `BYTES` and values of type
  /// `STRING` both appear in params as JSON strings. In these cases,
  /// `param_types` can be used to specify the exact SQL type for some or all of
  /// the SQL query parameters. See the definition of Type for more information
  /// about SQL types.
  core.Map<core.String, Type> paramTypes;

  /// Parameter names and values that bind to placeholders in the SQL string. A
  /// parameter placeholder consists of the `@` character followed by the
  /// parameter name (for example, `@firstName`). Parameter names can contain
  /// letters, numbers, and underscores. Parameters can appear anywhere that a
  /// literal value is expected. The same parameter name can be used more than
  /// once, for example: `"WHERE id > @msg_id AND id < @msg_id + 100"` It is an
  /// error to execute a SQL statement with unbound parameters.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> params;

  /// Additional options that affect how many partitions are created.
  PartitionOptions partitionOptions;

  /// Required. The query request to generate partitions for. The request will
  /// fail if the query is not root partitionable. The query plan of a root
  /// partitionable query has a single distributed union operator. A distributed
  /// union operator conceptually divides one or more tables into multiple
  /// splits, remotely evaluates a subquery independently on each split, and
  /// then unions all results. This must not contain DML commands, such as
  /// INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml
  /// transaction for large, partition-friendly DML operations.
  core.String sql;

  /// Read only snapshot transactions are supported, read/write and single use
  /// transactions are not.
  TransactionSelector transaction;

  PartitionQueryRequest();

  PartitionQueryRequest.fromJson(core.Map _json) {
    if (_json.containsKey('paramTypes')) {
      paramTypes = commons.mapMap<core.Map, Type>(
          _json['paramTypes'].cast<core.String, core.Map>(),
          (core.Map item) => Type.fromJson(item));
    }
    if (_json.containsKey('params')) {
      params = (_json['params'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('partitionOptions')) {
      partitionOptions = PartitionOptions.fromJson(_json['partitionOptions']);
    }
    if (_json.containsKey('sql')) {
      sql = _json['sql'];
    }
    if (_json.containsKey('transaction')) {
      transaction = TransactionSelector.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (paramTypes != null) {
      _json['paramTypes'] =
          commons.mapMap<Type, core.Map<core.String, core.Object>>(
              paramTypes, (Type item) => item.toJson());
    }
    if (params != null) {
      _json['params'] = params;
    }
    if (partitionOptions != null) {
      _json['partitionOptions'] = partitionOptions.toJson();
    }
    if (sql != null) {
      _json['sql'] = sql;
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// The request for PartitionRead
class PartitionReadRequest {
  /// The columns of table to be returned for each row matching this request.
  core.List<core.String> columns;

  /// If non-empty, the name of an index on table. This index is used instead of
  /// the table primary key when interpreting key_set and sorting result rows.
  /// See key_set for further information.
  core.String index;

  /// Required. `key_set` identifies the rows to be yielded. `key_set` names the
  /// primary keys of the rows in table to be yielded, unless index is present.
  /// If index is present, then key_set instead names index keys in index. It is
  /// not an error for the `key_set` to name rows that do not exist in the
  /// database. Read yields nothing for nonexistent rows.
  KeySet keySet;

  /// Additional options that affect how many partitions are created.
  PartitionOptions partitionOptions;

  /// Required. The name of the table in the database to be read.
  core.String table;

  /// Read only snapshot transactions are supported, read/write and single use
  /// transactions are not.
  TransactionSelector transaction;

  PartitionReadRequest();

  PartitionReadRequest.fromJson(core.Map _json) {
    if (_json.containsKey('columns')) {
      columns = (_json['columns'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('index')) {
      index = _json['index'];
    }
    if (_json.containsKey('keySet')) {
      keySet = KeySet.fromJson(_json['keySet']);
    }
    if (_json.containsKey('partitionOptions')) {
      partitionOptions = PartitionOptions.fromJson(_json['partitionOptions']);
    }
    if (_json.containsKey('table')) {
      table = _json['table'];
    }
    if (_json.containsKey('transaction')) {
      transaction = TransactionSelector.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (columns != null) {
      _json['columns'] = columns;
    }
    if (index != null) {
      _json['index'] = index;
    }
    if (keySet != null) {
      _json['keySet'] = keySet.toJson();
    }
    if (partitionOptions != null) {
      _json['partitionOptions'] = partitionOptions.toJson();
    }
    if (table != null) {
      _json['table'] = table;
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// The response for PartitionQuery or PartitionRead
class PartitionResponse {
  /// Partitions created by this request.
  core.List<Partition> partitions;

  /// Transaction created by this request.
  Transaction transaction;

  PartitionResponse();

  PartitionResponse.fromJson(core.Map _json) {
    if (_json.containsKey('partitions')) {
      partitions = (_json['partitions'] as core.List)
          .map<Partition>((value) => Partition.fromJson(value))
          .toList();
    }
    if (_json.containsKey('transaction')) {
      transaction = Transaction.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (partitions != null) {
      _json['partitions'] = partitions.map((value) => value.toJson()).toList();
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// Message type to initiate a Partitioned DML transaction.
class PartitionedDml {
  PartitionedDml();

  PartitionedDml.fromJson(
      // ignore: avoid_unused_constructor_parameters
      core.Map _json);

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    return _json;
  }
}

/// Node information for nodes appearing in a QueryPlan.plan_nodes.
class PlanNode {
  /// List of child node `index`es and their relationship to this parent.
  core.List<ChildLink> childLinks;

  /// The display name for the node.
  core.String displayName;

  /// The execution statistics associated with the node, contained in a group of
  /// key-value pairs. Only present if the plan was returned as a result of a
  /// profile query. For example, number of executions, number of rows/time per
  /// execution etc.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> executionStats;

  /// The `PlanNode`'s index in node list.
  core.int index;

  /// Used to determine the type of node. May be needed for visualizing
  /// different kinds of nodes differently. For example, If the node is a SCALAR
  /// node, it will have a condensed representation which can be used to
  /// directly embed a description of the node in its parent.
  /// Possible string values are:
  /// - "KIND_UNSPECIFIED" : Not specified.
  /// - "RELATIONAL" : Denotes a Relational operator node in the expression
  /// tree. Relational operators represent iterative processing of rows during
  /// query execution. For example, a `TableScan` operation that reads rows from
  /// a table.
  /// - "SCALAR" : Denotes a Scalar node in the expression tree. Scalar nodes
  /// represent non-iterable entities in the query plan. For example, constants
  /// or arithmetic operators appearing inside predicate expressions or
  /// references to column names.
  core.String kind;

  /// Attributes relevant to the node contained in a group of key-value pairs.
  /// For example, a Parameter Reference node could have the following
  /// information in its metadata: { "parameter_reference": "param1",
  /// "parameter_type": "array" }
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> metadata;

  /// Condensed representation for SCALAR nodes.
  ShortRepresentation shortRepresentation;

  PlanNode();

  PlanNode.fromJson(core.Map _json) {
    if (_json.containsKey('childLinks')) {
      childLinks = (_json['childLinks'] as core.List)
          .map<ChildLink>((value) => ChildLink.fromJson(value))
          .toList();
    }
    if (_json.containsKey('displayName')) {
      displayName = _json['displayName'];
    }
    if (_json.containsKey('executionStats')) {
      executionStats = (_json['executionStats'] as core.Map)
          .cast<core.String, core.Object>();
    }
    if (_json.containsKey('index')) {
      index = _json['index'];
    }
    if (_json.containsKey('kind')) {
      kind = _json['kind'];
    }
    if (_json.containsKey('metadata')) {
      metadata =
          (_json['metadata'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('shortRepresentation')) {
      shortRepresentation =
          ShortRepresentation.fromJson(_json['shortRepresentation']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (childLinks != null) {
      _json['childLinks'] = childLinks.map((value) => value.toJson()).toList();
    }
    if (displayName != null) {
      _json['displayName'] = displayName;
    }
    if (executionStats != null) {
      _json['executionStats'] = executionStats;
    }
    if (index != null) {
      _json['index'] = index;
    }
    if (kind != null) {
      _json['kind'] = kind;
    }
    if (metadata != null) {
      _json['metadata'] = metadata;
    }
    if (shortRepresentation != null) {
      _json['shortRepresentation'] = shortRepresentation.toJson();
    }
    return _json;
  }
}

/// An Identity and Access Management (IAM) policy, which specifies access
/// controls for Google Cloud resources. A `Policy` is a collection of
/// `bindings`. A `binding` binds one or more `members` to a single `role`.
/// Members can be user accounts, service accounts, Google groups, and domains
/// (such as G Suite). A `role` is a named list of permissions; each `role` can
/// be an IAM predefined role or a user-created custom role. For some types of
/// Google Cloud resources, a `binding` can also specify a `condition`, which is
/// a logical expression that allows access to a resource only if the expression
/// evaluates to `true`. A condition can add constraints based on attributes of
/// the request, the resource, or both. To learn which resources support
/// conditions in their IAM policies, see the [IAM
/// documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
/// **JSON example:** { "bindings": [ { "role":
/// "roles/resourcemanager.organizationAdmin", "members": [
/// "user:mike@example.com", "group:admins@example.com", "domain:google.com",
/// "serviceAccount:my-project-id@appspot.gserviceaccount.com" ] }, { "role":
/// "roles/resourcemanager.organizationViewer", "members": [
/// "user:eve@example.com" ], "condition": { "title": "expirable access",
/// "description": "Does not grant access after Sep 2020", "expression":
/// "request.time < timestamp('2020-10-01T00:00:00.000Z')", } } ], "etag":
/// "BwWWja0YfJA=", "version": 3 } **YAML example:** bindings: - members: -
/// user:mike@example.com - group:admins@example.com - domain:google.com -
/// serviceAccount:my-project-id@appspot.gserviceaccount.com role:
/// roles/resourcemanager.organizationAdmin - members: - user:eve@example.com
/// role: roles/resourcemanager.organizationViewer condition: title: expirable
/// access description: Does not grant access after Sep 2020 expression:
/// request.time < timestamp('2020-10-01T00:00:00.000Z') - etag: BwWWja0YfJA= -
/// version: 3 For a description of IAM and its features, see the [IAM
/// documentation](https://cloud.google.com/iam/docs/).
class Policy {
  /// Associates a list of `members` to a `role`. Optionally, may specify a
  /// `condition` that determines how and when the `bindings` are applied. Each
  /// of the `bindings` must contain at least one member.
  core.List<Binding> bindings;

  /// `etag` is used for optimistic concurrency control as a way to help prevent
  /// simultaneous updates of a policy from overwriting each other. It is
  /// strongly suggested that systems make use of the `etag` in the
  /// read-modify-write cycle to perform policy updates in order to avoid race
  /// conditions: An `etag` is returned in the response to `getIamPolicy`, and
  /// systems are expected to put that etag in the request to `setIamPolicy` to
  /// ensure that their change will be applied to the same version of the
  /// policy. **Important:** If you use IAM Conditions, you must include the
  /// `etag` field whenever you call `setIamPolicy`. If you omit this field,
  /// then IAM allows you to overwrite a version `3` policy with a version `1`
  /// policy, and all of the conditions in the version `3` policy are lost.
  core.String etag;
  core.List<core.int> get etagAsBytes => convert.base64.decode(etag);

  set etagAsBytes(core.List<core.int> _bytes) {
    etag =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// Specifies the format of the policy. Valid values are `0`, `1`, and `3`.
  /// Requests that specify an invalid value are rejected. Any operation that
  /// affects conditional role bindings must specify version `3`. This
  /// requirement applies to the following operations: * Getting a policy that
  /// includes a conditional role binding * Adding a conditional role binding to
  /// a policy * Changing a conditional role binding in a policy * Removing any
  /// role binding, with or without a condition, from a policy that includes
  /// conditions **Important:** If you use IAM Conditions, you must include the
  /// `etag` field whenever you call `setIamPolicy`. If you omit this field,
  /// then IAM allows you to overwrite a version `3` policy with a version `1`
  /// policy, and all of the conditions in the version `3` policy are lost. If a
  /// policy does not include any conditions, operations on that policy may
  /// specify any valid version or leave the field unset. To learn which
  /// resources support conditions in their IAM policies, see the [IAM
  /// documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
  core.int version;

  Policy();

  Policy.fromJson(core.Map _json) {
    if (_json.containsKey('bindings')) {
      bindings = (_json['bindings'] as core.List)
          .map<Binding>((value) => Binding.fromJson(value))
          .toList();
    }
    if (_json.containsKey('etag')) {
      etag = _json['etag'];
    }
    if (_json.containsKey('version')) {
      version = _json['version'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (bindings != null) {
      _json['bindings'] = bindings.map((value) => value.toJson()).toList();
    }
    if (etag != null) {
      _json['etag'] = etag;
    }
    if (version != null) {
      _json['version'] = version;
    }
    return _json;
  }
}

/// Query optimizer configuration.
class QueryOptions {
  /// An option to control the selection of optimizer version. This parameter
  /// allows individual queries to pick different query optimizer versions.
  /// Specifying "latest" as a value instructs Cloud Spanner to use the latest
  /// supported query optimizer version. If not specified, Cloud Spanner uses
  /// optimizer version set at the database level options. Any other positive
  /// integer (from the list of supported optimizer versions) overrides the
  /// default optimizer version for query execution. The list of supported
  /// optimizer versions can be queried from
  /// SPANNER_SYS.SUPPORTED_OPTIMIZER_VERSIONS. Executing a SQL statement with
  /// an invalid optimizer version will fail with a syntax error
  /// (`INVALID_ARGUMENT`) status. See
  /// https://cloud.google.com/spanner/docs/query-optimizer/manage-query-optimizer
  /// for more information on managing the query optimizer. The
  /// `optimizer_version` statement hint has precedence over this setting.
  core.String optimizerVersion;

  QueryOptions();

  QueryOptions.fromJson(core.Map _json) {
    if (_json.containsKey('optimizerVersion')) {
      optimizerVersion = _json['optimizerVersion'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (optimizerVersion != null) {
      _json['optimizerVersion'] = optimizerVersion;
    }
    return _json;
  }
}

/// Contains an ordered list of nodes appearing in the query plan.
class QueryPlan {
  /// The nodes in the query plan. Plan nodes are returned in pre-order starting
  /// with the plan root. Each PlanNode's `id` corresponds to its index in
  /// `plan_nodes`.
  core.List<PlanNode> planNodes;

  QueryPlan();

  QueryPlan.fromJson(core.Map _json) {
    if (_json.containsKey('planNodes')) {
      planNodes = (_json['planNodes'] as core.List)
          .map<PlanNode>((value) => PlanNode.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (planNodes != null) {
      _json['planNodes'] = planNodes.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// Message type to initiate a read-only transaction.
class ReadOnly {
  /// Executes all reads at a timestamp that is `exact_staleness` old. The
  /// timestamp is chosen soon after the read is started. Guarantees that all
  /// writes that have committed more than the specified number of seconds ago
  /// are visible. Because Cloud Spanner chooses the exact timestamp, this mode
  /// works even if the client's local clock is substantially skewed from Cloud
  /// Spanner commit timestamps. Useful for reading at nearby replicas without
  /// the distributed timestamp negotiation overhead of `max_staleness`.
  core.String exactStaleness;

  /// Read data at a timestamp >= `NOW - max_staleness` seconds. Guarantees that
  /// all writes that have committed more than the specified number of seconds
  /// ago are visible. Because Cloud Spanner chooses the exact timestamp, this
  /// mode works even if the client's local clock is substantially skewed from
  /// Cloud Spanner commit timestamps. Useful for reading the freshest data
  /// available at a nearby replica, while bounding the possible staleness if
  /// the local replica has fallen behind. Note that this option can only be
  /// used in single-use transactions.
  core.String maxStaleness;

  /// Executes all reads at a timestamp >= `min_read_timestamp`. This is useful
  /// for requesting fresher data than some previous read, or data that is fresh
  /// enough to observe the effects of some previously committed transaction
  /// whose timestamp is known. Note that this option can only be used in
  /// single-use transactions. A timestamp in RFC3339 UTC \"Zulu\" format,
  /// accurate to nanoseconds. Example: `"2014-10-02T15:01:23.045123456Z"`.
  core.String minReadTimestamp;

  /// Executes all reads at the given timestamp. Unlike other modes, reads at a
  /// specific timestamp are repeatable; the same read at the same timestamp
  /// always returns the same data. If the timestamp is in the future, the read
  /// will block until the specified timestamp, modulo the read's deadline.
  /// Useful for large scale consistent reads such as mapreduces, or for
  /// coordinating many reads against a consistent snapshot of the data. A
  /// timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds.
  /// Example: `"2014-10-02T15:01:23.045123456Z"`.
  core.String readTimestamp;

  /// If true, the Cloud Spanner-selected read timestamp is included in the
  /// Transaction message that describes the transaction.
  core.bool returnReadTimestamp;

  /// Read at a timestamp where all previously committed transactions are
  /// visible.
  core.bool strong;

  ReadOnly();

  ReadOnly.fromJson(core.Map _json) {
    if (_json.containsKey('exactStaleness')) {
      exactStaleness = _json['exactStaleness'];
    }
    if (_json.containsKey('maxStaleness')) {
      maxStaleness = _json['maxStaleness'];
    }
    if (_json.containsKey('minReadTimestamp')) {
      minReadTimestamp = _json['minReadTimestamp'];
    }
    if (_json.containsKey('readTimestamp')) {
      readTimestamp = _json['readTimestamp'];
    }
    if (_json.containsKey('returnReadTimestamp')) {
      returnReadTimestamp = _json['returnReadTimestamp'];
    }
    if (_json.containsKey('strong')) {
      strong = _json['strong'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (exactStaleness != null) {
      _json['exactStaleness'] = exactStaleness;
    }
    if (maxStaleness != null) {
      _json['maxStaleness'] = maxStaleness;
    }
    if (minReadTimestamp != null) {
      _json['minReadTimestamp'] = minReadTimestamp;
    }
    if (readTimestamp != null) {
      _json['readTimestamp'] = readTimestamp;
    }
    if (returnReadTimestamp != null) {
      _json['returnReadTimestamp'] = returnReadTimestamp;
    }
    if (strong != null) {
      _json['strong'] = strong;
    }
    return _json;
  }
}

/// The request for Read and StreamingRead.
class ReadRequest {
  /// Required. The columns of table to be returned for each row matching this
  /// request.
  core.List<core.String> columns;

  /// If non-empty, the name of an index on table. This index is used instead of
  /// the table primary key when interpreting key_set and sorting result rows.
  /// See key_set for further information.
  core.String index;

  /// Required. `key_set` identifies the rows to be yielded. `key_set` names the
  /// primary keys of the rows in table to be yielded, unless index is present.
  /// If index is present, then key_set instead names index keys in index. If
  /// the partition_token field is empty, rows are yielded in table primary key
  /// order (if index is empty) or index key order (if index is non-empty). If
  /// the partition_token field is not empty, rows will be yielded in an
  /// unspecified order. It is not an error for the `key_set` to name rows that
  /// do not exist in the database. Read yields nothing for nonexistent rows.
  KeySet keySet;

  /// If greater than zero, only the first `limit` rows are yielded. If `limit`
  /// is zero, the default is no limit. A limit cannot be specified if
  /// `partition_token` is set.
  core.String limit;

  /// If present, results will be restricted to the specified partition
  /// previously created using PartitionRead(). There must be an exact match for
  /// the values of fields common to this message and the PartitionReadRequest
  /// message used to create this partition_token.
  core.String partitionToken;
  core.List<core.int> get partitionTokenAsBytes =>
      convert.base64.decode(partitionToken);

  set partitionTokenAsBytes(core.List<core.int> _bytes) {
    partitionToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// If this request is resuming a previously interrupted read, `resume_token`
  /// should be copied from the last PartialResultSet yielded before the
  /// interruption. Doing this enables the new read to resume where the last
  /// read left off. The rest of the request parameters must exactly match the
  /// request that yielded this token.
  core.String resumeToken;
  core.List<core.int> get resumeTokenAsBytes =>
      convert.base64.decode(resumeToken);

  set resumeTokenAsBytes(core.List<core.int> _bytes) {
    resumeToken =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// Required. The name of the table in the database to be read.
  core.String table;

  /// The transaction to use. If none is provided, the default is a temporary
  /// read-only transaction with strong concurrency.
  TransactionSelector transaction;

  ReadRequest();

  ReadRequest.fromJson(core.Map _json) {
    if (_json.containsKey('columns')) {
      columns = (_json['columns'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('index')) {
      index = _json['index'];
    }
    if (_json.containsKey('keySet')) {
      keySet = KeySet.fromJson(_json['keySet']);
    }
    if (_json.containsKey('limit')) {
      limit = _json['limit'];
    }
    if (_json.containsKey('partitionToken')) {
      partitionToken = _json['partitionToken'];
    }
    if (_json.containsKey('resumeToken')) {
      resumeToken = _json['resumeToken'];
    }
    if (_json.containsKey('table')) {
      table = _json['table'];
    }
    if (_json.containsKey('transaction')) {
      transaction = TransactionSelector.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (columns != null) {
      _json['columns'] = columns;
    }
    if (index != null) {
      _json['index'] = index;
    }
    if (keySet != null) {
      _json['keySet'] = keySet.toJson();
    }
    if (limit != null) {
      _json['limit'] = limit;
    }
    if (partitionToken != null) {
      _json['partitionToken'] = partitionToken;
    }
    if (resumeToken != null) {
      _json['resumeToken'] = resumeToken;
    }
    if (table != null) {
      _json['table'] = table;
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// Message type to initiate a read-write transaction. Currently this
/// transaction type has no options.
class ReadWrite {
  ReadWrite();

  ReadWrite.fromJson(
      // ignore: avoid_unused_constructor_parameters
      core.Map _json);

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    return _json;
  }
}

class ReplicaInfo {
  /// If true, this location is designated as the default leader location where
  /// leader replicas are placed. See the [region types
  /// documentation](https://cloud.google.com/spanner/docs/instances#region_types)
  /// for more details.
  core.bool defaultLeaderLocation;

  /// The location of the serving resources, e.g. "us-central1".
  core.String location;

  /// The type of replica.
  /// Possible string values are:
  /// - "TYPE_UNSPECIFIED" : Not specified.
  /// - "READ_WRITE" : Read-write replicas support both reads and writes. These
  /// replicas: * Maintain a full copy of your data. * Serve reads. * Can vote
  /// whether to commit a write. * Participate in leadership election. * Are
  /// eligible to become a leader.
  /// - "READ_ONLY" : Read-only replicas only support reads (not writes).
  /// Read-only replicas: * Maintain a full copy of your data. * Serve reads. *
  /// Do not participate in voting to commit writes. * Are not eligible to
  /// become a leader.
  /// - "WITNESS" : Witness replicas don't support reads but do participate in
  /// voting to commit writes. Witness replicas: * Do not maintain a full copy
  /// of data. * Do not serve reads. * Vote whether to commit writes. *
  /// Participate in leader election but are not eligible to become leader.
  core.String type;

  ReplicaInfo();

  ReplicaInfo.fromJson(core.Map _json) {
    if (_json.containsKey('defaultLeaderLocation')) {
      defaultLeaderLocation = _json['defaultLeaderLocation'];
    }
    if (_json.containsKey('location')) {
      location = _json['location'];
    }
    if (_json.containsKey('type')) {
      type = _json['type'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (defaultLeaderLocation != null) {
      _json['defaultLeaderLocation'] = defaultLeaderLocation;
    }
    if (location != null) {
      _json['location'] = location;
    }
    if (type != null) {
      _json['type'] = type;
    }
    return _json;
  }
}

/// Metadata type for the long-running operation returned by RestoreDatabase.
class RestoreDatabaseMetadata {
  /// Information about the backup used to restore the database.
  BackupInfo backupInfo;

  /// The time at which cancellation of this operation was received.
  /// Operations.CancelOperation starts asynchronous cancellation on a
  /// long-running operation. The server makes a best effort to cancel the
  /// operation, but success is not guaranteed. Clients can use
  /// Operations.GetOperation or other methods to check whether the cancellation
  /// succeeded or whether the operation completed despite cancellation. On
  /// successful cancellation, the operation is not deleted; instead, it becomes
  /// an operation with an Operation.error value with a google.rpc.Status.code
  /// of 1, corresponding to `Code.CANCELLED`.
  core.String cancelTime;

  /// Name of the database being created and restored to.
  core.String name;

  /// If exists, the name of the long-running operation that will be used to
  /// track the post-restore optimization process to optimize the performance of
  /// the restored database, and remove the dependency on the restore source.
  /// The name is of the form `projects//instances//databases//operations/`
  /// where the is the name of database being created and restored to. The
  /// metadata type of the long-running operation is
  /// OptimizeRestoredDatabaseMetadata. This long-running operation will be
  /// automatically created by the system after the RestoreDatabase long-running
  /// operation completes successfully. This operation will not be created if
  /// the restore was not successful.
  core.String optimizeDatabaseOperationName;

  /// The progress of the RestoreDatabase operation.
  OperationProgress progress;

  /// The type of the restore source.
  /// Possible string values are:
  /// - "TYPE_UNSPECIFIED" : No restore associated.
  /// - "BACKUP" : A backup was used as the source of the restore.
  core.String sourceType;

  RestoreDatabaseMetadata();

  RestoreDatabaseMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('backupInfo')) {
      backupInfo = BackupInfo.fromJson(_json['backupInfo']);
    }
    if (_json.containsKey('cancelTime')) {
      cancelTime = _json['cancelTime'];
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
    if (_json.containsKey('optimizeDatabaseOperationName')) {
      optimizeDatabaseOperationName = _json['optimizeDatabaseOperationName'];
    }
    if (_json.containsKey('progress')) {
      progress = OperationProgress.fromJson(_json['progress']);
    }
    if (_json.containsKey('sourceType')) {
      sourceType = _json['sourceType'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (backupInfo != null) {
      _json['backupInfo'] = backupInfo.toJson();
    }
    if (cancelTime != null) {
      _json['cancelTime'] = cancelTime;
    }
    if (name != null) {
      _json['name'] = name;
    }
    if (optimizeDatabaseOperationName != null) {
      _json['optimizeDatabaseOperationName'] = optimizeDatabaseOperationName;
    }
    if (progress != null) {
      _json['progress'] = progress.toJson();
    }
    if (sourceType != null) {
      _json['sourceType'] = sourceType;
    }
    return _json;
  }
}

/// The request for RestoreDatabase.
class RestoreDatabaseRequest {
  /// Name of the backup from which to restore. Values are of the form
  /// `projects//instances//backups/`.
  core.String backup;

  /// Required. The id of the database to create and restore to. This database
  /// must not already exist. The `database_id` appended to `parent` forms the
  /// full database name of the form `projects//instances//databases/`.
  core.String databaseId;

  RestoreDatabaseRequest();

  RestoreDatabaseRequest.fromJson(core.Map _json) {
    if (_json.containsKey('backup')) {
      backup = _json['backup'];
    }
    if (_json.containsKey('databaseId')) {
      databaseId = _json['databaseId'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (backup != null) {
      _json['backup'] = backup;
    }
    if (databaseId != null) {
      _json['databaseId'] = databaseId;
    }
    return _json;
  }
}

/// Information about the database restore.
class RestoreInfo {
  /// Information about the backup used to restore the database. The backup may
  /// no longer exist.
  BackupInfo backupInfo;

  /// The type of the restore source.
  /// Possible string values are:
  /// - "TYPE_UNSPECIFIED" : No restore associated.
  /// - "BACKUP" : A backup was used as the source of the restore.
  core.String sourceType;

  RestoreInfo();

  RestoreInfo.fromJson(core.Map _json) {
    if (_json.containsKey('backupInfo')) {
      backupInfo = BackupInfo.fromJson(_json['backupInfo']);
    }
    if (_json.containsKey('sourceType')) {
      sourceType = _json['sourceType'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (backupInfo != null) {
      _json['backupInfo'] = backupInfo.toJson();
    }
    if (sourceType != null) {
      _json['sourceType'] = sourceType;
    }
    return _json;
  }
}

/// Results from Read or ExecuteSql.
class ResultSet {
  /// Metadata about the result set, such as row type information.
  ResultSetMetadata metadata;

  /// Each element in `rows` is a row whose format is defined by
  /// metadata.row_type. The ith element in each row matches the ith field in
  /// metadata.row_type. Elements are encoded based on type as described here.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.List<core.Object>> rows;

  /// Query plan and execution statistics for the SQL statement that produced
  /// this result set. These can be requested by setting
  /// ExecuteSqlRequest.query_mode. DML statements always produce stats
  /// containing the number of rows modified, unless executed using the
  /// ExecuteSqlRequest.QueryMode.PLAN ExecuteSqlRequest.query_mode. Other
  /// fields may or may not be populated, based on the
  /// ExecuteSqlRequest.query_mode.
  ResultSetStats stats;

  ResultSet();

  ResultSet.fromJson(core.Map _json) {
    if (_json.containsKey('metadata')) {
      metadata = ResultSetMetadata.fromJson(_json['metadata']);
    }
    if (_json.containsKey('rows')) {
      rows = (_json['rows'] as core.List)
          .map<core.List<core.Object>>(
              (value) => (value as core.List).cast<core.Object>())
          .toList();
    }
    if (_json.containsKey('stats')) {
      stats = ResultSetStats.fromJson(_json['stats']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (metadata != null) {
      _json['metadata'] = metadata.toJson();
    }
    if (rows != null) {
      _json['rows'] = rows;
    }
    if (stats != null) {
      _json['stats'] = stats.toJson();
    }
    return _json;
  }
}

/// Metadata about a ResultSet or PartialResultSet.
class ResultSetMetadata {
  /// Indicates the field names and types for the rows in the result set. For
  /// example, a SQL query like `"SELECT UserId, UserName FROM Users"` could
  /// return a `row_type` value like: "fields": [ { "name": "UserId", "type": {
  /// "code": "INT64" } }, { "name": "UserName", "type": { "code": "STRING" } },
  /// ]
  StructType rowType;

  /// If the read or SQL query began a transaction as a side-effect, the
  /// information about the new transaction is yielded here.
  Transaction transaction;

  ResultSetMetadata();

  ResultSetMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('rowType')) {
      rowType = StructType.fromJson(_json['rowType']);
    }
    if (_json.containsKey('transaction')) {
      transaction = Transaction.fromJson(_json['transaction']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (rowType != null) {
      _json['rowType'] = rowType.toJson();
    }
    if (transaction != null) {
      _json['transaction'] = transaction.toJson();
    }
    return _json;
  }
}

/// Additional statistics about a ResultSet or PartialResultSet.
class ResultSetStats {
  /// QueryPlan for the query associated with this result.
  QueryPlan queryPlan;

  /// Aggregated statistics from the execution of the query. Only present when
  /// the query is profiled. For example, a query could return the statistics as
  /// follows: { "rows_returned": "3", "elapsed_time": "1.22 secs", "cpu_time":
  /// "1.19 secs" }
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> queryStats;

  /// Standard DML returns an exact count of rows that were modified.
  core.String rowCountExact;

  /// Partitioned DML does not offer exactly-once semantics, so it returns a
  /// lower bound of the rows modified.
  core.String rowCountLowerBound;

  ResultSetStats();

  ResultSetStats.fromJson(core.Map _json) {
    if (_json.containsKey('queryPlan')) {
      queryPlan = QueryPlan.fromJson(_json['queryPlan']);
    }
    if (_json.containsKey('queryStats')) {
      queryStats =
          (_json['queryStats'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('rowCountExact')) {
      rowCountExact = _json['rowCountExact'];
    }
    if (_json.containsKey('rowCountLowerBound')) {
      rowCountLowerBound = _json['rowCountLowerBound'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (queryPlan != null) {
      _json['queryPlan'] = queryPlan.toJson();
    }
    if (queryStats != null) {
      _json['queryStats'] = queryStats;
    }
    if (rowCountExact != null) {
      _json['rowCountExact'] = rowCountExact;
    }
    if (rowCountLowerBound != null) {
      _json['rowCountLowerBound'] = rowCountLowerBound;
    }
    return _json;
  }
}

/// The request for Rollback.
class RollbackRequest {
  /// Required. The transaction to roll back.
  core.String transactionId;
  core.List<core.int> get transactionIdAsBytes =>
      convert.base64.decode(transactionId);

  set transactionIdAsBytes(core.List<core.int> _bytes) {
    transactionId =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  RollbackRequest();

  RollbackRequest.fromJson(core.Map _json) {
    if (_json.containsKey('transactionId')) {
      transactionId = _json['transactionId'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (transactionId != null) {
      _json['transactionId'] = transactionId;
    }
    return _json;
  }
}

/// A session in the Cloud Spanner API.
class Session {
  /// Output only. The approximate timestamp when the session is last used. It
  /// is typically earlier than the actual last use time.
  core.String approximateLastUseTime;

  /// Output only. The timestamp when the session is created.
  core.String createTime;

  /// The labels for the session. * Label keys must be between 1 and 63
  /// characters long and must conform to the following regular expression:
  /// `[a-z]([-a-z0-9]*[a-z0-9])?`. * Label values must be between 0 and 63
  /// characters long and must conform to the regular expression
  /// `([a-z]([-a-z0-9]*[a-z0-9])?)?`. * No more than 64 labels can be
  /// associated with a given session. See https://goo.gl/xmQnxf for more
  /// information on and examples of labels.
  core.Map<core.String, core.String> labels;

  /// Output only. The name of the session. This is always system-assigned.
  core.String name;

  Session();

  Session.fromJson(core.Map _json) {
    if (_json.containsKey('approximateLastUseTime')) {
      approximateLastUseTime = _json['approximateLastUseTime'];
    }
    if (_json.containsKey('createTime')) {
      createTime = _json['createTime'];
    }
    if (_json.containsKey('labels')) {
      labels = (_json['labels'] as core.Map).cast<core.String, core.String>();
    }
    if (_json.containsKey('name')) {
      name = _json['name'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (approximateLastUseTime != null) {
      _json['approximateLastUseTime'] = approximateLastUseTime;
    }
    if (createTime != null) {
      _json['createTime'] = createTime;
    }
    if (labels != null) {
      _json['labels'] = labels;
    }
    if (name != null) {
      _json['name'] = name;
    }
    return _json;
  }
}

/// Request message for `SetIamPolicy` method.
class SetIamPolicyRequest {
  /// REQUIRED: The complete policy to be applied to the `resource`. The size of
  /// the policy is limited to a few 10s of KB. An empty policy is a valid
  /// policy but certain Cloud Platform services (such as Projects) might reject
  /// them.
  Policy policy;

  SetIamPolicyRequest();

  SetIamPolicyRequest.fromJson(core.Map _json) {
    if (_json.containsKey('policy')) {
      policy = Policy.fromJson(_json['policy']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (policy != null) {
      _json['policy'] = policy.toJson();
    }
    return _json;
  }
}

/// Condensed representation of a node and its subtree. Only present for
/// `SCALAR` PlanNode(s).
class ShortRepresentation {
  /// A string representation of the expression subtree rooted at this node.
  core.String description;

  /// A mapping of (subquery variable name) -> (subquery node id) for cases
  /// where the `description` string of this node references a `SCALAR` subquery
  /// contained in the expression subtree rooted at this node. The referenced
  /// `SCALAR` subquery may not necessarily be a direct child of this node.
  core.Map<core.String, core.int> subqueries;

  ShortRepresentation();

  ShortRepresentation.fromJson(core.Map _json) {
    if (_json.containsKey('description')) {
      description = _json['description'];
    }
    if (_json.containsKey('subqueries')) {
      subqueries =
          (_json['subqueries'] as core.Map).cast<core.String, core.int>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (description != null) {
      _json['description'] = description;
    }
    if (subqueries != null) {
      _json['subqueries'] = subqueries;
    }
    return _json;
  }
}

/// A single DML statement.
class Statement {
  /// It is not always possible for Cloud Spanner to infer the right SQL type
  /// from a JSON value. For example, values of type `BYTES` and values of type
  /// `STRING` both appear in params as JSON strings. In these cases,
  /// `param_types` can be used to specify the exact SQL type for some or all of
  /// the SQL statement parameters. See the definition of Type for more
  /// information about SQL types.
  core.Map<core.String, Type> paramTypes;

  /// Parameter names and values that bind to placeholders in the DML string. A
  /// parameter placeholder consists of the `@` character followed by the
  /// parameter name (for example, `@firstName`). Parameter names can contain
  /// letters, numbers, and underscores. Parameters can appear anywhere that a
  /// literal value is expected. The same parameter name can be used more than
  /// once, for example: `"WHERE id > @msg_id AND id < @msg_id + 100"` It is an
  /// error to execute a SQL statement with unbound parameters.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.Map<core.String, core.Object> params;

  /// Required. The DML string.
  core.String sql;

  Statement();

  Statement.fromJson(core.Map _json) {
    if (_json.containsKey('paramTypes')) {
      paramTypes = commons.mapMap<core.Map, Type>(
          _json['paramTypes'].cast<core.String, core.Map>(),
          (core.Map item) => Type.fromJson(item));
    }
    if (_json.containsKey('params')) {
      params = (_json['params'] as core.Map).cast<core.String, core.Object>();
    }
    if (_json.containsKey('sql')) {
      sql = _json['sql'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (paramTypes != null) {
      _json['paramTypes'] =
          commons.mapMap<Type, core.Map<core.String, core.Object>>(
              paramTypes, (Type item) => item.toJson());
    }
    if (params != null) {
      _json['params'] = params;
    }
    if (sql != null) {
      _json['sql'] = sql;
    }
    return _json;
  }
}

/// The `Status` type defines a logical error model that is suitable for
/// different programming environments, including REST APIs and RPC APIs. It is
/// used by [gRPC](https://github.com/grpc). Each `Status` message contains
/// three pieces of data: error code, error message, and error details. You can
/// find out more about this error model and how to work with it in the [API
/// Design Guide](https://cloud.google.com/apis/design/errors).
class Status {
  /// The status code, which should be an enum value of google.rpc.Code.
  core.int code;

  /// A list of messages that carry the error details. There is a common set of
  /// message types for APIs to use.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.Map<core.String, core.Object>> details;

  /// A developer-facing error message, which should be in English. Any
  /// user-facing error message should be localized and sent in the
  /// google.rpc.Status.details field, or localized by the client.
  core.String message;

  Status();

  Status.fromJson(core.Map _json) {
    if (_json.containsKey('code')) {
      code = _json['code'];
    }
    if (_json.containsKey('details')) {
      details = (_json['details'] as core.List)
          .map<core.Map<core.String, core.Object>>(
              (value) => (value as core.Map).cast<core.String, core.Object>())
          .toList();
    }
    if (_json.containsKey('message')) {
      message = _json['message'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (code != null) {
      _json['code'] = code;
    }
    if (details != null) {
      _json['details'] = details;
    }
    if (message != null) {
      _json['message'] = message;
    }
    return _json;
  }
}

/// `StructType` defines the fields of a STRUCT type.
class StructType {
  /// The list of fields that make up this struct. Order is significant, because
  /// values of this struct type are represented as lists, where the order of
  /// field values matches the order of fields in the StructType. In turn, the
  /// order of fields matches the order of columns in a read request, or the
  /// order of fields in the `SELECT` clause of a query.
  core.List<Field> fields;

  StructType();

  StructType.fromJson(core.Map _json) {
    if (_json.containsKey('fields')) {
      fields = (_json['fields'] as core.List)
          .map<Field>((value) => Field.fromJson(value))
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (fields != null) {
      _json['fields'] = fields.map((value) => value.toJson()).toList();
    }
    return _json;
  }
}

/// Request message for `TestIamPermissions` method.
class TestIamPermissionsRequest {
  /// REQUIRED: The set of permissions to check for 'resource'. Permissions with
  /// wildcards (such as '*', 'spanner.*', 'spanner.instances.*') are not
  /// allowed.
  core.List<core.String> permissions;

  TestIamPermissionsRequest();

  TestIamPermissionsRequest.fromJson(core.Map _json) {
    if (_json.containsKey('permissions')) {
      permissions = (_json['permissions'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (permissions != null) {
      _json['permissions'] = permissions;
    }
    return _json;
  }
}

/// Response message for `TestIamPermissions` method.
class TestIamPermissionsResponse {
  /// A subset of `TestPermissionsRequest.permissions` that the caller is
  /// allowed.
  core.List<core.String> permissions;

  TestIamPermissionsResponse();

  TestIamPermissionsResponse.fromJson(core.Map _json) {
    if (_json.containsKey('permissions')) {
      permissions = (_json['permissions'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (permissions != null) {
      _json['permissions'] = permissions;
    }
    return _json;
  }
}

/// A transaction.
class Transaction {
  /// `id` may be used to identify the transaction in subsequent Read,
  /// ExecuteSql, Commit, or Rollback calls. Single-use read-only transactions
  /// do not have IDs, because single-use transactions do not support multiple
  /// requests.
  core.String id;
  core.List<core.int> get idAsBytes => convert.base64.decode(id);

  set idAsBytes(core.List<core.int> _bytes) {
    id =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// For snapshot read-only transactions, the read timestamp chosen for the
  /// transaction. Not returned by default: see
  /// TransactionOptions.ReadOnly.return_read_timestamp. A timestamp in RFC3339
  /// UTC \"Zulu\" format, accurate to nanoseconds. Example:
  /// `"2014-10-02T15:01:23.045123456Z"`.
  core.String readTimestamp;

  Transaction();

  Transaction.fromJson(core.Map _json) {
    if (_json.containsKey('id')) {
      id = _json['id'];
    }
    if (_json.containsKey('readTimestamp')) {
      readTimestamp = _json['readTimestamp'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (id != null) {
      _json['id'] = id;
    }
    if (readTimestamp != null) {
      _json['readTimestamp'] = readTimestamp;
    }
    return _json;
  }
}

/// # Transactions Each session can have at most one active transaction at a
/// time (note that standalone reads and queries use a transaction internally
/// and do count towards the one transaction limit). After the active
/// transaction is completed, the session can immediately be re-used for the
/// next transaction. It is not necessary to create a new session for each
/// transaction. # Transaction Modes Cloud Spanner supports three transaction
/// modes: 1. Locking read-write. This type of transaction is the only way to
/// write data into Cloud Spanner. These transactions rely on pessimistic
/// locking and, if necessary, two-phase commit. Locking read-write transactions
/// may abort, requiring the application to retry. 2. Snapshot read-only. This
/// transaction type provides guaranteed consistency across several reads, but
/// does not allow writes. Snapshot read-only transactions can be configured to
/// read at timestamps in the past. Snapshot read-only transactions do not need
/// to be committed. 3. Partitioned DML. This type of transaction is used to
/// execute a single Partitioned DML statement. Partitioned DML partitions the
/// key space and runs the DML statement over each partition in parallel using
/// separate, internal transactions that commit independently. Partitioned DML
/// transactions do not need to be committed. For transactions that only read,
/// snapshot read-only transactions provide simpler semantics and are almost
/// always faster. In particular, read-only transactions do not take locks, so
/// they do not conflict with read-write transactions. As a consequence of not
/// taking locks, they also do not abort, so retry loops are not needed.
/// Transactions may only read/write data in a single database. They may,
/// however, read/write data in different tables within that database. ##
/// Locking Read-Write Transactions Locking transactions may be used to
/// atomically read-modify-write data anywhere in a database. This type of
/// transaction is externally consistent. Clients should attempt to minimize the
/// amount of time a transaction is active. Faster transactions commit with
/// higher probability and cause less contention. Cloud Spanner attempts to keep
/// read locks active as long as the transaction continues to do reads, and the
/// transaction has not been terminated by Commit or Rollback. Long periods of
/// inactivity at the client may cause Cloud Spanner to release a transaction's
/// locks and abort it. Conceptually, a read-write transaction consists of zero
/// or more reads or SQL statements followed by Commit. At any time before
/// Commit, the client can send a Rollback request to abort the transaction. ###
/// Semantics Cloud Spanner can commit the transaction if all read locks it
/// acquired are still valid at commit time, and it is able to acquire write
/// locks for all writes. Cloud Spanner can abort the transaction for any
/// reason. If a commit attempt returns `ABORTED`, Cloud Spanner guarantees that
/// the transaction has not modified any user data in Cloud Spanner. Unless the
/// transaction commits, Cloud Spanner makes no guarantees about how long the
/// transaction's locks were held for. It is an error to use Cloud Spanner locks
/// for any sort of mutual exclusion other than between Cloud Spanner
/// transactions themselves. ### Retrying Aborted Transactions When a
/// transaction aborts, the application can choose to retry the whole
/// transaction again. To maximize the chances of successfully committing the
/// retry, the client should execute the retry in the same session as the
/// original attempt. The original session's lock priority increases with each
/// consecutive abort, meaning that each attempt has a slightly better chance of
/// success than the previous. Under some circumstances (e.g., many transactions
/// attempting to modify the same row(s)), a transaction can abort many times in
/// a short period before successfully committing. Thus, it is not a good idea
/// to cap the number of retries a transaction can attempt; instead, it is
/// better to limit the total amount of wall time spent retrying. ### Idle
/// Transactions A transaction is considered idle if it has no outstanding reads
/// or SQL queries and has not started a read or SQL query within the last 10
/// seconds. Idle transactions can be aborted by Cloud Spanner so that they
/// don't hold on to locks indefinitely. In that case, the commit will fail with
/// error `ABORTED`. If this behavior is undesirable, periodically executing a
/// simple SQL query in the transaction (e.g., `SELECT 1`) prevents the
/// transaction from becoming idle. ## Snapshot Read-Only Transactions Snapshot
/// read-only transactions provides a simpler method than locking read-write
/// transactions for doing several consistent reads. However, this type of
/// transaction does not support writes. Snapshot transactions do not take
/// locks. Instead, they work by choosing a Cloud Spanner timestamp, then
/// executing all reads at that timestamp. Since they do not acquire locks, they
/// do not block concurrent read-write transactions. Unlike locking read-write
/// transactions, snapshot read-only transactions never abort. They can fail if
/// the chosen read timestamp is garbage collected; however, the default garbage
/// collection policy is generous enough that most applications do not need to
/// worry about this in practice. Snapshot read-only transactions do not need to
/// call Commit or Rollback (and in fact are not permitted to do so). To execute
/// a snapshot transaction, the client specifies a timestamp bound, which tells
/// Cloud Spanner how to choose a read timestamp. The types of timestamp bound
/// are: - Strong (the default). - Bounded staleness. - Exact staleness. If the
/// Cloud Spanner database to be read is geographically distributed, stale
/// read-only transactions can execute more quickly than strong or read-write
/// transaction, because they are able to execute far from the leader replica.
/// Each type of timestamp bound is discussed in detail below. ### Strong Strong
/// reads are guaranteed to see the effects of all transactions that have
/// committed before the start of the read. Furthermore, all rows yielded by a
/// single read are consistent with each other -- if any part of the read
/// observes a transaction, all parts of the read see the transaction. Strong
/// reads are not repeatable: two consecutive strong read-only transactions
/// might return inconsistent results if there are concurrent writes. If
/// consistency across reads is required, the reads should be executed within a
/// transaction or at an exact read timestamp. See
/// TransactionOptions.ReadOnly.strong. ### Exact Staleness These timestamp
/// bounds execute reads at a user-specified timestamp. Reads at a timestamp are
/// guaranteed to see a consistent prefix of the global transaction history:
/// they observe modifications done by all transactions with a commit timestamp
/// <= the read timestamp, and observe none of the modifications done by
/// transactions with a larger commit timestamp. They will block until all
/// conflicting transactions that may be assigned commit timestamps <= the read
/// timestamp have finished. The timestamp can either be expressed as an
/// absolute Cloud Spanner commit timestamp or a staleness relative to the
/// current time. These modes do not require a "negotiation phase" to pick a
/// timestamp. As a result, they execute slightly faster than the equivalent
/// boundedly stale concurrency modes. On the other hand, boundedly stale reads
/// usually return fresher results. See
/// TransactionOptions.ReadOnly.read_timestamp and
/// TransactionOptions.ReadOnly.exact_staleness. ### Bounded Staleness Bounded
/// staleness modes allow Cloud Spanner to pick the read timestamp, subject to a
/// user-provided staleness bound. Cloud Spanner chooses the newest timestamp
/// within the staleness bound that allows execution of the reads at the closest
/// available replica without blocking. All rows yielded are consistent with
/// each other -- if any part of the read observes a transaction, all parts of
/// the read see the transaction. Boundedly stale reads are not repeatable: two
/// stale reads, even if they use the same staleness bound, can execute at
/// different timestamps and thus return inconsistent results. Boundedly stale
/// reads execute in two phases: the first phase negotiates a timestamp among
/// all replicas needed to serve the read. In the second phase, reads are
/// executed at the negotiated timestamp. As a result of the two phase
/// execution, bounded staleness reads are usually a little slower than
/// comparable exact staleness reads. However, they are typically able to return
/// fresher results, and are more likely to execute at the closest replica.
/// Because the timestamp negotiation requires up-front knowledge of which rows
/// will be read, it can only be used with single-use read-only transactions.
/// See TransactionOptions.ReadOnly.max_staleness and
/// TransactionOptions.ReadOnly.min_read_timestamp. ### Old Read Timestamps and
/// Garbage Collection Cloud Spanner continuously garbage collects deleted and
/// overwritten data in the background to reclaim storage space. This process is
/// known as "version GC". By default, version GC reclaims versions after they
/// are one hour old. Because of this, Cloud Spanner cannot perform reads at
/// read timestamps more than one hour in the past. This restriction also
/// applies to in-progress reads and/or SQL queries whose timestamp become too
/// old while executing. Reads and SQL queries with too-old read timestamps fail
/// with the error `FAILED_PRECONDITION`. ## Partitioned DML Transactions
/// Partitioned DML transactions are used to execute DML statements with a
/// different execution strategy that provides different, and often better,
/// scalability properties for large, table-wide operations than DML in a
/// ReadWrite transaction. Smaller scoped statements, such as an OLTP workload,
/// should prefer using ReadWrite transactions. Partitioned DML partitions the
/// keyspace and runs the DML statement on each partition in separate, internal
/// transactions. These transactions commit automatically when complete, and run
/// independently from one another. To reduce lock contention, this execution
/// strategy only acquires read locks on rows that match the WHERE clause of the
/// statement. Additionally, the smaller per-partition transactions hold locks
/// for less time. That said, Partitioned DML is not a drop-in replacement for
/// standard DML used in ReadWrite transactions. - The DML statement must be
/// fully-partitionable. Specifically, the statement must be expressible as the
/// union of many statements which each access only a single row of the table. -
/// The statement is not applied atomically to all rows of the table. Rather,
/// the statement is applied atomically to partitions of the table, in
/// independent transactions. Secondary index rows are updated atomically with
/// the base table rows. - Partitioned DML does not guarantee exactly-once
/// execution semantics against a partition. The statement will be applied at
/// least once to each partition. It is strongly recommended that the DML
/// statement should be idempotent to avoid unexpected results. For instance, it
/// is potentially dangerous to run a statement such as `UPDATE table SET column
/// = column + 1` as it could be run multiple times against some rows. - The
/// partitions are committed automatically - there is no support for Commit or
/// Rollback. If the call returns an error, or if the client issuing the
/// ExecuteSql call dies, it is possible that some rows had the statement
/// executed on them successfully. It is also possible that statement was never
/// executed against other rows. - Partitioned DML transactions may only contain
/// the execution of a single DML statement via ExecuteSql or
/// ExecuteStreamingSql. - If any error is encountered during the execution of
/// the partitioned DML operation (for instance, a UNIQUE INDEX violation,
/// division by zero, or a value that cannot be stored due to schema
/// constraints), then the operation is stopped at that point and an error is
/// returned. It is possible that at this point, some partitions have been
/// committed (or even committed multiple times), and other partitions have not
/// been run at all. Given the above, Partitioned DML is good fit for large,
/// database-wide, operations that are idempotent, such as deleting old rows
/// from a very large table.
class TransactionOptions {
  /// Partitioned DML transaction. Authorization to begin a Partitioned DML
  /// transaction requires `spanner.databases.beginPartitionedDmlTransaction`
  /// permission on the `session` resource.
  PartitionedDml partitionedDml;

  /// Transaction will not write. Authorization to begin a read-only transaction
  /// requires `spanner.databases.beginReadOnlyTransaction` permission on the
  /// `session` resource.
  ReadOnly readOnly;

  /// Transaction may write. Authorization to begin a read-write transaction
  /// requires `spanner.databases.beginOrRollbackReadWriteTransaction`
  /// permission on the `session` resource.
  ReadWrite readWrite;

  TransactionOptions();

  TransactionOptions.fromJson(core.Map _json) {
    if (_json.containsKey('partitionedDml')) {
      partitionedDml = PartitionedDml.fromJson(_json['partitionedDml']);
    }
    if (_json.containsKey('readOnly')) {
      readOnly = ReadOnly.fromJson(_json['readOnly']);
    }
    if (_json.containsKey('readWrite')) {
      readWrite = ReadWrite.fromJson(_json['readWrite']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (partitionedDml != null) {
      _json['partitionedDml'] = partitionedDml.toJson();
    }
    if (readOnly != null) {
      _json['readOnly'] = readOnly.toJson();
    }
    if (readWrite != null) {
      _json['readWrite'] = readWrite.toJson();
    }
    return _json;
  }
}

/// This message is used to select the transaction in which a Read or ExecuteSql
/// call runs. See TransactionOptions for more information about transactions.
class TransactionSelector {
  /// Begin a new transaction and execute this read or SQL query in it. The
  /// transaction ID of the new transaction is returned in
  /// ResultSetMetadata.transaction, which is a Transaction.
  TransactionOptions begin;

  /// Execute the read or SQL query in a previously-started transaction.
  core.String id;
  core.List<core.int> get idAsBytes => convert.base64.decode(id);

  set idAsBytes(core.List<core.int> _bytes) {
    id =
        convert.base64.encode(_bytes).replaceAll('/', '_').replaceAll('+', '-');
  }

  /// Execute the read or SQL query in a temporary transaction. This is the most
  /// efficient way to execute a transaction that consists of a single SQL
  /// query.
  TransactionOptions singleUse;

  TransactionSelector();

  TransactionSelector.fromJson(core.Map _json) {
    if (_json.containsKey('begin')) {
      begin = TransactionOptions.fromJson(_json['begin']);
    }
    if (_json.containsKey('id')) {
      id = _json['id'];
    }
    if (_json.containsKey('singleUse')) {
      singleUse = TransactionOptions.fromJson(_json['singleUse']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (begin != null) {
      _json['begin'] = begin.toJson();
    }
    if (id != null) {
      _json['id'] = id;
    }
    if (singleUse != null) {
      _json['singleUse'] = singleUse.toJson();
    }
    return _json;
  }
}

/// `Type` indicates the type of a Cloud Spanner value, as might be stored in a
/// table cell or returned from an SQL query.
class Type {
  /// If code == ARRAY, then `array_element_type` is the type of the array
  /// elements.
  Type arrayElementType;

  /// Required. The TypeCode for this type.
  /// Possible string values are:
  /// - "TYPE_CODE_UNSPECIFIED" : Not specified.
  /// - "BOOL" : Encoded as JSON `true` or `false`.
  /// - "INT64" : Encoded as `string`, in decimal format.
  /// - "FLOAT64" : Encoded as `number`, or the strings `"NaN"`, `"Infinity"`,
  /// or `"-Infinity"`.
  /// - "TIMESTAMP" : Encoded as `string` in RFC 3339 timestamp format. The time
  /// zone must be present, and must be `"Z"`. If the schema has the column
  /// option `allow_commit_timestamp=true`, the placeholder string
  /// `"spanner.commit_timestamp()"` can be used to instruct the system to
  /// insert the commit timestamp associated with the transaction commit.
  /// - "DATE" : Encoded as `string` in RFC 3339 date format.
  /// - "STRING" : Encoded as `string`.
  /// - "BYTES" : Encoded as a base64-encoded `string`, as described in RFC
  /// 4648, section 4.
  /// - "ARRAY" : Encoded as `list`, where the list elements are represented
  /// according to array_element_type.
  /// - "STRUCT" : Encoded as `list`, where list element `i` is represented
  /// according to [struct_type.fields[i]][google.spanner.v1.StructType.fields].
  /// - "NUMERIC" : Encoded as `string`, in decimal format or scientific
  /// notation format. Decimal format: `[+-]Digits[.[Digits]]` or `+-.Digits`
  /// Scientific notation: `[+-]Digits[.[Digits]][ExponentIndicator[+-]Digits]`
  /// or `+-.Digits[ExponentIndicator[+-]Digits]` (ExponentIndicator is `"e"` or
  /// `"E"`)
  core.String code;

  /// If code == STRUCT, then `struct_type` provides type information for the
  /// struct's fields.
  StructType structType;

  Type();

  Type.fromJson(core.Map _json) {
    if (_json.containsKey('arrayElementType')) {
      arrayElementType = Type.fromJson(_json['arrayElementType']);
    }
    if (_json.containsKey('code')) {
      code = _json['code'];
    }
    if (_json.containsKey('structType')) {
      structType = StructType.fromJson(_json['structType']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (arrayElementType != null) {
      _json['arrayElementType'] = arrayElementType.toJson();
    }
    if (code != null) {
      _json['code'] = code;
    }
    if (structType != null) {
      _json['structType'] = structType.toJson();
    }
    return _json;
  }
}

/// Metadata type for the operation returned by UpdateDatabaseDdl.
class UpdateDatabaseDdlMetadata {
  /// Reports the commit timestamps of all statements that have succeeded so
  /// far, where `commit_timestamps[i]` is the commit timestamp for the
  /// statement `statements[i]`.
  core.List<core.String> commitTimestamps;

  /// The database being modified.
  core.String database;

  /// For an update this list contains all the statements. For an individual
  /// statement, this list contains only that statement.
  core.List<core.String> statements;

  UpdateDatabaseDdlMetadata();

  UpdateDatabaseDdlMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('commitTimestamps')) {
      commitTimestamps =
          (_json['commitTimestamps'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('database')) {
      database = _json['database'];
    }
    if (_json.containsKey('statements')) {
      statements = (_json['statements'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (commitTimestamps != null) {
      _json['commitTimestamps'] = commitTimestamps;
    }
    if (database != null) {
      _json['database'] = database;
    }
    if (statements != null) {
      _json['statements'] = statements;
    }
    return _json;
  }
}

/// Enqueues the given DDL statements to be applied, in order but not
/// necessarily all at once, to the database schema at some point (or points) in
/// the future. The server checks that the statements are executable
/// (syntactically valid, name tables that exist, etc.) before enqueueing them,
/// but they may still fail upon later execution (e.g., if a statement from
/// another batch of statements is applied first and it conflicts in some way,
/// or if there is some data-related problem like a `NULL` value in a column to
/// which `NOT NULL` would be added). If a statement fails, all subsequent
/// statements in the batch are automatically cancelled. Each batch of
/// statements is assigned a name which can be used with the Operations API to
/// monitor progress. See the operation_id field for more details.
class UpdateDatabaseDdlRequest {
  /// If empty, the new update request is assigned an automatically-generated
  /// operation ID. Otherwise, `operation_id` is used to construct the name of
  /// the resulting Operation. Specifying an explicit operation ID simplifies
  /// determining whether the statements were executed in the event that the
  /// UpdateDatabaseDdl call is replayed, or the return value is otherwise lost:
  /// the database and `operation_id` fields can be combined to form the name of
  /// the resulting longrunning.Operation: `/operations/`. `operation_id` should
  /// be unique within the database, and must be a valid identifier: `a-z*`.
  /// Note that automatically-generated operation IDs always begin with an
  /// underscore. If the named operation already exists, UpdateDatabaseDdl
  /// returns `ALREADY_EXISTS`.
  core.String operationId;

  /// Required. DDL statements to be applied to the database.
  core.List<core.String> statements;

  UpdateDatabaseDdlRequest();

  UpdateDatabaseDdlRequest.fromJson(core.Map _json) {
    if (_json.containsKey('operationId')) {
      operationId = _json['operationId'];
    }
    if (_json.containsKey('statements')) {
      statements = (_json['statements'] as core.List).cast<core.String>();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (operationId != null) {
      _json['operationId'] = operationId;
    }
    if (statements != null) {
      _json['statements'] = statements;
    }
    return _json;
  }
}

/// Metadata type for the operation returned by UpdateInstance.
class UpdateInstanceMetadata {
  /// The time at which this operation was cancelled. If set, this operation is
  /// in the process of undoing itself (which is guaranteed to succeed) and
  /// cannot be cancelled again.
  core.String cancelTime;

  /// The time at which this operation failed or was completed successfully.
  core.String endTime;

  /// The desired end state of the update.
  Instance instance;

  /// The time at which UpdateInstance request was received.
  core.String startTime;

  UpdateInstanceMetadata();

  UpdateInstanceMetadata.fromJson(core.Map _json) {
    if (_json.containsKey('cancelTime')) {
      cancelTime = _json['cancelTime'];
    }
    if (_json.containsKey('endTime')) {
      endTime = _json['endTime'];
    }
    if (_json.containsKey('instance')) {
      instance = Instance.fromJson(_json['instance']);
    }
    if (_json.containsKey('startTime')) {
      startTime = _json['startTime'];
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (cancelTime != null) {
      _json['cancelTime'] = cancelTime;
    }
    if (endTime != null) {
      _json['endTime'] = endTime;
    }
    if (instance != null) {
      _json['instance'] = instance.toJson();
    }
    if (startTime != null) {
      _json['startTime'] = startTime;
    }
    return _json;
  }
}

/// The request for UpdateInstance.
class UpdateInstanceRequest {
  /// Required. A mask specifying which fields in Instance should be updated.
  /// The field mask must always be specified; this prevents any future fields
  /// in Instance from being erased accidentally by clients that do not know
  /// about them.
  core.String fieldMask;

  /// Required. The instance to update, which must always include the instance
  /// name. Otherwise, only fields mentioned in field_mask need be included.
  Instance instance;

  UpdateInstanceRequest();

  UpdateInstanceRequest.fromJson(core.Map _json) {
    if (_json.containsKey('fieldMask')) {
      fieldMask = _json['fieldMask'];
    }
    if (_json.containsKey('instance')) {
      instance = Instance.fromJson(_json['instance']);
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (fieldMask != null) {
      _json['fieldMask'] = fieldMask;
    }
    if (instance != null) {
      _json['instance'] = instance.toJson();
    }
    return _json;
  }
}

/// Arguments to insert, update, insert_or_update, and replace operations.
class Write {
  /// The names of the columns in table to be written. The list of columns must
  /// contain enough columns to allow Cloud Spanner to derive values for all
  /// primary key columns in the row(s) to be modified.
  core.List<core.String> columns;

  /// Required. The table whose rows will be written.
  core.String table;

  /// The values to be written. `values` can contain more than one list of
  /// values. If it does, then multiple rows are written, one for each entry in
  /// `values`. Each list in `values` must have exactly as many entries as there
  /// are entries in columns above. Sending multiple lists is equivalent to
  /// sending multiple `Mutation`s, each containing one `values` entry and
  /// repeating table and columns. Individual values in each list are encoded as
  /// described here.
  ///
  /// The values for Object must be JSON objects. It can consist of `num`,
  /// `String`, `bool` and `null` as well as `Map` and `List` values.
  core.List<core.List<core.Object>> values;

  Write();

  Write.fromJson(core.Map _json) {
    if (_json.containsKey('columns')) {
      columns = (_json['columns'] as core.List).cast<core.String>();
    }
    if (_json.containsKey('table')) {
      table = _json['table'];
    }
    if (_json.containsKey('values')) {
      values = (_json['values'] as core.List)
          .map<core.List<core.Object>>(
              (value) => (value as core.List).cast<core.Object>())
          .toList();
    }
  }

  core.Map<core.String, core.Object> toJson() {
    final _json = <core.String, core.Object>{};
    if (columns != null) {
      _json['columns'] = columns;
    }
    if (table != null) {
      _json['table'] = table;
    }
    if (values != null) {
      _json['values'] = values;
    }
    return _json;
  }
}