format parameter list (#27261)

diff --git a/packages/flutter_tools/test/asset_bundle_package_fonts_test.dart b/packages/flutter_tools/test/asset_bundle_package_fonts_test.dart
index a30b8cb..648a092 100644
--- a/packages/flutter_tools/test/asset_bundle_package_fonts_test.dart
+++ b/packages/flutter_tools/test/asset_bundle_package_fonts_test.dart

@@ -26,7 +26,7 @@
     // rolls into Flutter.
     return path?.replaceAll('/', fs.path.separator);
   }
-  void writePubspecFile(String path, String name, {String fontsSection}) {
+  void writePubspecFile(String path, String name, { String fontsSection }) {
     if (fontsSection == null) {
       fontsSection = '';
     } else {

diff --git a/packages/flutter_tools/test/asset_bundle_package_test.dart b/packages/flutter_tools/test/asset_bundle_package_test.dart
index 9ed6f03..2ea7946 100644
--- a/packages/flutter_tools/test/asset_bundle_package_test.dart
+++ b/packages/flutter_tools/test/asset_bundle_package_test.dart

@@ -26,7 +26,7 @@
     // rolls into Flutter.
     return path?.replaceAll('/', fs.path.separator);
   }
-  void writePubspecFile(String path, String name, {List<String> assets}) {
+  void writePubspecFile(String path, String name, { List<String> assets }) {
     String assetsSection;
     if (assets == null) {
       assetsSection = '';

diff --git a/packages/flutter_tools/test/base/net_test.dart b/packages/flutter_tools/test/base/net_test.dart
index c99182c..dd867ed 100644
--- a/packages/flutter_tools/test/base/net_test.dart
+++ b/packages/flutter_tools/test/base/net_test.dart

@@ -192,8 +192,11 @@
   String get reasonPhrase => '<reason phrase>';
 
   @override
-  StreamSubscription<List<int>> listen(void onData(List<int> event), {
-    Function onError, void onDone(), bool cancelOnError
+  StreamSubscription<List<int>> listen(
+    void onData(List<int> event), {
+    Function onError,
+    void onDone(),
+    bool cancelOnError,
   }) {
     return Stream<List<int>>.fromFuture(Future<List<int>>.error(const io.SocketException('test')))
       .listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);

diff --git a/packages/flutter_tools/test/base/process_test.dart b/packages/flutter_tools/test/base/process_test.dart
index f897690..2139a54 100644
--- a/packages/flutter_tools/test/base/process_test.dart
+++ b/packages/flutter_tools/test/base/process_test.dart

@@ -69,7 +69,7 @@
       mockLogger = BufferLogger();
     });
 
-    MockProcess Function(List<String>) processMetaFactory(List<String> stdout, {List<String> stderr = const <String>[]}) {
+    MockProcess Function(List<String>) processMetaFactory(List<String> stdout, { List<String> stderr = const <String>[] }) {
       final Stream<List<int>> stdoutStream =
           Stream<List<int>>.fromIterable(stdout.map<List<int>>((String s) => s.codeUnits));
       final Stream<List<int>> stderrStream =

diff --git a/packages/flutter_tools/test/cache_test.dart b/packages/flutter_tools/test/cache_test.dart
index 03912cb..41840a3 100644
--- a/packages/flutter_tools/test/cache_test.dart
+++ b/packages/flutter_tools/test/cache_test.dart

@@ -154,7 +154,7 @@
 
 class MockFile extends Mock implements File {
   @override
-  Future<RandomAccessFile> open({FileMode mode = FileMode.read}) async {
+  Future<RandomAccessFile> open({ FileMode mode = FileMode.read }) async {
     return MockRandomAccessFile();
   }
 }

diff --git a/packages/flutter_tools/test/channel_test.dart b/packages/flutter_tools/test/channel_test.dart
index 1e6ea10..6e985c9 100644
--- a/packages/flutter_tools/test/channel_test.dart
+++ b/packages/flutter_tools/test/channel_test.dart

@@ -18,7 +18,7 @@
 import 'src/common.dart';
 import 'src/context.dart';
 
-Process createMockProcess({int exitCode = 0, String stdout = '', String stderr = ''}) {
+Process createMockProcess({ int exitCode = 0, String stdout = '', String stderr = '' }) {
   final Stream<List<int>> stdoutStream = Stream<List<int>>.fromIterable(<List<int>>[
     utf8.encode(stdout),
   ]);

diff --git a/packages/flutter_tools/test/commands/create_test.dart b/packages/flutter_tools/test/commands/create_test.dart
index 70ad746..21fa293 100644
--- a/packages/flutter_tools/test/commands/create_test.dart
+++ b/packages/flutter_tools/test/commands/create_test.dart

@@ -956,7 +956,7 @@
   expect(exec.exitCode, 0);
 }
 
-Future<void> _runFlutterTest(Directory workingDir, {String target}) async {
+Future<void> _runFlutterTest(Directory workingDir, { String target }) async {
   final String flutterToolsPath = fs.path.absolute(fs.path.join(
     'bin',
     'flutter_tools.dart',
@@ -1057,8 +1057,11 @@
   String get reasonPhrase => '<reason phrase>';
 
   @override
-  StreamSubscription<List<int>> listen(void onData(List<int> event), {
-    Function onError, void onDone(), bool cancelOnError
+  StreamSubscription<List<int>> listen(
+    void onData(List<int> event), {
+    Function onError,
+    void onDone(),
+    bool cancelOnError
   }) {
     return Stream<List<int>>.fromIterable(<List<int>>[result.codeUnits])
       .listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);

diff --git a/packages/flutter_tools/test/commands/devices_test.dart b/packages/flutter_tools/test/commands/devices_test.dart
index f3fa126..a63f19b 100644
--- a/packages/flutter_tools/test/commands/devices_test.dart
+++ b/packages/flutter_tools/test/commands/devices_test.dart

@@ -42,27 +42,27 @@
 class MockProcessManager extends Mock implements ProcessManager {
   @override
   Future<ProcessResult> run(
-      List<dynamic> command, {
-        String workingDirectory,
-        Map<String, String> environment,
-        bool includeParentEnvironment = true,
-        bool runInShell = false,
-        Encoding stdoutEncoding = systemEncoding,
-        Encoding stderrEncoding = systemEncoding,
-      }) async {
+    List<dynamic> command, {
+    String workingDirectory,
+    Map<String, String> environment,
+    bool includeParentEnvironment = true,
+    bool runInShell = false,
+    Encoding stdoutEncoding = systemEncoding,
+    Encoding stderrEncoding = systemEncoding,
+  }) async {
     return ProcessResult(0, 0, '', '');
   }
 
   @override
   ProcessResult runSync(
-      List<dynamic> command, {
-        String workingDirectory,
-        Map<String, String> environment,
-        bool includeParentEnvironment = true,
-        bool runInShell = false,
-        Encoding stdoutEncoding = systemEncoding,
-        Encoding stderrEncoding = systemEncoding,
-      }) {
+    List<dynamic> command, {
+    String workingDirectory,
+    Map<String, String> environment,
+    bool includeParentEnvironment = true,
+    bool runInShell = false,
+    Encoding stdoutEncoding = systemEncoding,
+    Encoding stderrEncoding = systemEncoding,
+  }) {
     return ProcessResult(0, 0, '', '');
   }
 }

diff --git a/packages/flutter_tools/test/commands/drive_test.dart b/packages/flutter_tools/test/commands/drive_test.dart
index bf61d20..81a435c 100644
--- a/packages/flutter_tools/test/commands/drive_test.dart
+++ b/packages/flutter_tools/test/commands/drive_test.dart

@@ -26,7 +26,7 @@
     MemoryFileSystem fs;
     Directory tempDir;
 
-    void withMockDevice([Device mock]) {
+    void withMockDevice([ Device mock ]) {
       mockDevice = mock ?? MockDevice();
       targetDeviceFinder = () async => mockDevice;
       testDeviceManager.addDevice(mockDevice);

diff --git a/packages/flutter_tools/test/commands/ide_config_test.dart b/packages/flutter_tools/test/commands/ide_config_test.dart
index f3959a1..4f4bf24 100644
--- a/packages/flutter_tools/test/commands/ide_config_test.dart
+++ b/packages/flutter_tools/test/commands/ide_config_test.dart

@@ -20,7 +20,7 @@
     Directory intellijDir;
     Directory toolsDir;
 
-    Map<String, String> _getFilesystemContents([Directory root]) {
+    Map<String, String> _getFilesystemContents([ Directory root ]) {
       final String tempPath = tempDir.absolute.path;
       final List<String> paths =
           (root ?? tempDir).listSync(recursive: true).map((FileSystemEntity entity) {
@@ -39,7 +39,7 @@
       return contents;
     }
 
-    Map<String, String> _getManifest(Directory base, String marker, {bool isTemplate = false}) {
+    Map<String, String> _getManifest(Directory base, String marker, { bool isTemplate = false }) {
       final String basePath = fs.path.relative(base.path, from: tempDir.absolute.path);
       final String suffix = isTemplate ? Template.copyTemplateExtension : '';
       return <String, String>{

diff --git a/packages/flutter_tools/test/commands/packages_test.dart b/packages/flutter_tools/test/commands/packages_test.dart
index 051bd39..d7a4718 100644
--- a/packages/flutter_tools/test/commands/packages_test.dart
+++ b/packages/flutter_tools/test/commands/packages_test.dart

@@ -45,7 +45,7 @@
       tryToDelete(tempDir);
     });
 
-    Future<String> createProjectWithPlugin(String plugin, {List<String> arguments}) async {
+    Future<String> createProjectWithPlugin(String plugin, { List<String> arguments }) async {
       final String projectPath = await createProject(tempDir, arguments: arguments);
       final File pubspec = fs.file(fs.path.join(projectPath, 'pubspec.yaml'));
       String content = await pubspec.readAsString();

diff --git a/packages/flutter_tools/test/commands/test_test.dart b/packages/flutter_tools/test/commands/test_test.dart
index 4c05295..cefe0bd 100644
--- a/packages/flutter_tools/test/commands/test_test.dart
+++ b/packages/flutter_tools/test/commands/test_test.dart

@@ -90,7 +90,7 @@
   });
 }
 
-Future<void> _testFile(String testName, String workingDirectory, String testDirectory, {Matcher exitCode}) async {
+Future<void> _testFile(String testName, String workingDirectory, String testDirectory, { Matcher exitCode }) async {
   exitCode ??= isNonZero;
   final String fullTestExpectation = fs.path.join(testDirectory, '${testName}_expectation.txt');
   final File expectationFile = fs.file(fullTestExpectation);

diff --git a/packages/flutter_tools/test/compile_test.dart b/packages/flutter_tools/test/compile_test.dart
index ba7ae68..5bef8cc 100644
--- a/packages/flutter_tools/test/compile_test.dart
+++ b/packages/flutter_tools/test/compile_test.dart

@@ -502,9 +502,12 @@
   });
 }
 
-Future<void> _recompile(StreamController<List<int>> streamController,
-  ResidentCompiler generator, MockStdIn mockFrontendServerStdIn,
-  String mockCompilerOutput) async {
+Future<void> _recompile(
+  StreamController<List<int>> streamController,
+  ResidentCompiler generator,
+  MockStdIn mockFrontendServerStdIn,
+  String mockCompilerOutput,
+) async {
   // Put content into the output stream after generator.recompile gets
   // going few lines below, resets completer.
   scheduleMicrotask(() {
@@ -565,12 +568,12 @@
   }
 
   @override
-  void write([Object o = '']) {
+  void write([ Object o = '' ]) {
     _stdInWrites.write(o);
   }
 
   @override
-  void writeln([Object o = '']) {
+  void writeln([ Object o = '' ]) {
     _stdInWrites.writeln(o);
   }
 }

diff --git a/packages/flutter_tools/test/crash_reporting_test.dart b/packages/flutter_tools/test/crash_reporting_test.dart
index f3255c6..cac269e 100644
--- a/packages/flutter_tools/test/crash_reporting_test.dart
+++ b/packages/flutter_tools/test/crash_reporting_test.dart

@@ -216,16 +216,16 @@
   void write(_) {}
 
   @override
-  void writeAll(_, [__ = '']) {}
+  void writeAll(_, [ __ = '' ]) {}
 
   @override
-  void writeln([_ = '']) {}
+  void writeln([ _ = '' ]) {}
 
   @override
   void writeCharCode(_) {}
 
   @override
-  void addError(_, [__]) {}
+  void addError(_, [ __ ]) {}
 
   @override
   Future<dynamic> addStream(_) async {}

diff --git a/packages/flutter_tools/test/dart/pub_get_test.dart b/packages/flutter_tools/test/dart/pub_get_test.dart
index abd5d8b..f3552c2 100644
--- a/packages/flutter_tools/test/dart/pub_get_test.dart
+++ b/packages/flutter_tools/test/dart/pub_get_test.dart

@@ -200,7 +200,7 @@
   Stream<T> where(bool test(T event)) => MockStream<T>();
 
   @override
-  StreamSubscription<T> listen(void onData(T event), {Function onError, void onDone(), bool cancelOnError}) {
+  StreamSubscription<T> listen(void onData(T event), { Function onError, void onDone(), bool cancelOnError }) {
     return MockStreamSubscription<T>();
   }
 
@@ -210,7 +210,7 @@
 
 class MockStreamSubscription<T> implements StreamSubscription<T> {
   @override
-  Future<E> asFuture<E>([E futureValue]) => Future<E>.value();
+  Future<E> asFuture<E>([ E futureValue ]) => Future<E>.value();
 
   @override
   Future<void> cancel() async { }
@@ -236,7 +236,7 @@
 
 class MockFile implements File {
   @override
-  Future<RandomAccessFile> open({FileMode mode = FileMode.read}) async {
+  Future<RandomAccessFile> open({ FileMode mode = FileMode.read }) async {
     return MockRandomAccessFile();
   }
 

diff --git a/packages/flutter_tools/test/devfs_test.dart b/packages/flutter_tools/test/devfs_test.dart
index 5a96c7d..16ccf40 100644
--- a/packages/flutter_tools/test/devfs_test.dart
+++ b/packages/flutter_tools/test/devfs_test.dart

@@ -604,7 +604,8 @@
   }
 
   @override
-  Future<Map<String, dynamic>> invokeRpcRaw(String method, {
+  Future<Map<String, dynamic>> invokeRpcRaw(
+    String method, {
     Map<String, dynamic> params = const <String, dynamic>{},
     Duration timeout,
     bool timeoutFatal = true,

diff --git a/packages/flutter_tools/test/flutter_manifest_test.dart b/packages/flutter_tools/test/flutter_manifest_test.dart
index 424c9da..b4f4508 100644
--- a/packages/flutter_tools/test/flutter_manifest_test.dart
+++ b/packages/flutter_tools/test/flutter_manifest_test.dart

@@ -494,8 +494,11 @@
       expect(flutterManifest.isEmpty, false);
     }
 
-    void testUsingContextAndFs(String description, FileSystem filesystem,
-        dynamic testMethod()) {
+    void testUsingContextAndFs(
+      String description,
+      FileSystem filesystem,
+      dynamic testMethod(),
+    ) {
       testUsingContext(description,
               () async {
             writeEmptySchemaFile(filesystem);

diff --git a/packages/flutter_tools/test/integration/test_driver.dart b/packages/flutter_tools/test/integration/test_driver.dart
index 952f227..dcb011d 100644
--- a/packages/flutter_tools/test/integration/test_driver.dart
+++ b/packages/flutter_tools/test/integration/test_driver.dart

@@ -120,7 +120,7 @@
     _stderr.stream.listen((String message) => _debugPrint(message, topic: '<=stderr='));
   }
 
-  Future<void> connectToVmService({bool pauseOnExceptions = false}) async {
+  Future<void> connectToVmService({ bool pauseOnExceptions = false }) async {
     _vmService = await vmServiceConnectUri('$_vmServiceWsUri');
     _vmService.onSend.listen((String s) => _debugPrint(s, topic: '=vm=>'));
     _vmService.onReceive.listen((String s) => _debugPrint(s, topic: '<=vm='));
@@ -240,11 +240,11 @@
     );
   }
 
-  Future<Isolate> resume({bool waitForNextPause = false}) => _resume(null, waitForNextPause);
-  Future<Isolate> stepOver({bool waitForNextPause = true}) => _resume(StepOption.kOver, waitForNextPause);
+  Future<Isolate> resume({ bool waitForNextPause = false }) => _resume(null, waitForNextPause);
+  Future<Isolate> stepOver({ bool waitForNextPause = true }) => _resume(StepOption.kOver, waitForNextPause);
   Future<Isolate> stepOverAsync({ bool waitForNextPause = true }) => _resume(StepOption.kOverAsyncSuspension, waitForNextPause);
-  Future<Isolate> stepInto({bool waitForNextPause = true}) => _resume(StepOption.kInto, waitForNextPause);
-  Future<Isolate> stepOut({bool waitForNextPause = true}) => _resume(StepOption.kOut, waitForNextPause);
+  Future<Isolate> stepInto({ bool waitForNextPause = true }) => _resume(StepOption.kInto, waitForNextPause);
+  Future<Isolate> stepOut({ bool waitForNextPause = true }) => _resume(StepOption.kOut, waitForNextPause);
 
   Future<bool> isAtAsyncSuspension() async {
     final Isolate isolate = await _getFlutterIsolate();
@@ -354,7 +354,8 @@
     ).whenComplete(subscription.cancel);
   }
 
-  Future<T> _timeoutWithMessages<T>(Future<T> Function() callback, {
+  Future<T> _timeoutWithMessages<T>(
+    Future<T> Function() callback, {
     @required String task,
     Duration timeout = defaultTimeout,
   }) {
@@ -491,10 +492,10 @@
     _currentRunningAppId = (await started)['params']['appId'];
   }
 
-  Future<void> hotRestart({bool pause = false}) => _restart(fullRestart: true, pause: pause);
+  Future<void> hotRestart({ bool pause = false }) => _restart(fullRestart: true, pause: pause);
   Future<void> hotReload() => _restart(fullRestart: false);
 
-  Future<void> _restart({bool fullRestart = false, bool pause = false}) async {
+  Future<void> _restart({ bool fullRestart = false, bool pause = false }) async {
     if (_currentRunningAppId == null)
       throw Exception('App has not started yet');
 

diff --git a/packages/flutter_tools/test/ios/cocoapods_test.dart b/packages/flutter_tools/test/ios/cocoapods_test.dart
index 3a8384c..78454d7 100644
--- a/packages/flutter_tools/test/ios/cocoapods_test.dart
+++ b/packages/flutter_tools/test/ios/cocoapods_test.dart

@@ -572,5 +572,5 @@
 class MockProcessManager extends Mock implements ProcessManager {}
 class MockXcodeProjectInterpreter extends Mock implements XcodeProjectInterpreter {}
 
-ProcessResult exitsWithError([String stdout = '']) => ProcessResult(1, 1, stdout, '');
-ProcessResult exitsHappy([String stdout = '']) => ProcessResult(1, 0, stdout, '');
+ProcessResult exitsWithError([ String stdout = '' ]) => ProcessResult(1, 1, stdout, '');
+ProcessResult exitsHappy([ String stdout = '' ]) => ProcessResult(1, 0, stdout, '');

diff --git a/packages/flutter_tools/test/protocol_discovery_test.dart b/packages/flutter_tools/test/protocol_discovery_test.dart
index c4e9050..4c71291 100644
--- a/packages/flutter_tools/test/protocol_discovery_test.dart
+++ b/packages/flutter_tools/test/protocol_discovery_test.dart

@@ -228,7 +228,7 @@
   final int availablePort;
 
   @override
-  Future<int> forward(int devicePort, {int hostPort}) async {
+  Future<int> forward(int devicePort, { int hostPort }) async {
     hostPort ??= 0;
     if (hostPort == 0) {
       return availablePort;

diff --git a/packages/flutter_tools/test/src/common.dart b/packages/flutter_tools/test/src/common.dart
index c672e98..44f6556 100644
--- a/packages/flutter_tools/test/src/common.dart
+++ b/packages/flutter_tools/test/src/common.dart

@@ -68,7 +68,7 @@
   return fs.path.normalize(fs.path.join(toolsPath, '..', '..'));
 }
 
-CommandRunner<void> createTestCommandRunner([FlutterCommand command]) {
+CommandRunner<void> createTestCommandRunner([ FlutterCommand command ]) {
   final FlutterCommandRunner runner = FlutterCommandRunner();
   if (command != null)
     runner.addCommand(command);
@@ -76,15 +76,17 @@
 }
 
 /// Updates [path] to have a modification time [seconds] from now.
-void updateFileModificationTime(String path,
-                                DateTime baseTime,
-                                int seconds) {
+void updateFileModificationTime(
+  String path,
+  DateTime baseTime,
+  int seconds,
+) {
   final DateTime modificationTime = baseTime.add(Duration(seconds: seconds));
   fs.file(path).setLastModifiedSync(modificationTime);
 }
 
 /// Matcher for functions that throw [ToolExit].
-Matcher throwsToolExit({int exitCode, Pattern message}) {
+Matcher throwsToolExit({ int exitCode, Pattern message }) {
   Matcher matcher = isToolExit;
   if (exitCode != null)
     matcher = allOf(matcher, (ToolExit e) => e.exitCode == exitCode);
@@ -97,7 +99,7 @@
 final Matcher isToolExit = isInstanceOf<ToolExit>();
 
 /// Matcher for functions that throw [ProcessExit].
-Matcher throwsProcessExit([dynamic exitCode]) {
+Matcher throwsProcessExit([ dynamic exitCode ]) {
   return exitCode == null
       ? throwsA(isProcessExit)
       : throwsA(allOf(isProcessExit, (ProcessExit e) => e.exitCode == exitCode));
@@ -109,7 +111,7 @@
 /// Creates a flutter project in the [temp] directory using the
 /// [arguments] list if specified, or `--no-pub` if not.
 /// Returns the path to the flutter project.
-Future<String> createProject(Directory temp, {List<String> arguments}) async {
+Future<String> createProject(Directory temp, { List<String> arguments }) async {
   arguments ??= <String>['--no-pub'];
   final String projectPath = fs.path.join(temp.path, 'flutter_project');
   final CreateCommand command = CreateCommand();

diff --git a/packages/flutter_tools/test/src/context.dart b/packages/flutter_tools/test/src/context.dart
index 92ae65e..143a791 100644
--- a/packages/flutter_tools/test/src/context.dart
+++ b/packages/flutter_tools/test/src/context.dart

@@ -38,7 +38,9 @@
 typedef ContextInitializer = void Function(AppContext testContext);
 
 @isTest
-void testUsingContext(String description, dynamic testMethod(), {
+void testUsingContext(
+  String description,
+  dynamic testMethod(), {
   Timeout timeout,
   Map<Type, Generator> overrides = const <Type, Generator>{},
   bool initializeFlutterRoot = true,

diff --git a/packages/flutter_tools/test/src/mocks.dart b/packages/flutter_tools/test/src/mocks.dart
index 3dcc063..015b96e 100644
--- a/packages/flutter_tools/test/src/mocks.dart
+++ b/packages/flutter_tools/test/src/mocks.dart

@@ -268,12 +268,12 @@
   }
 
   @override
-  void writeln([Object obj = '']) {
+  void writeln([ Object obj = '' ]) {
     add(encoding.encode('$obj\n'));
   }
 
   @override
-  void writeAll(Iterable<dynamic> objects, [String separator = '']) {
+  void writeAll(Iterable<dynamic> objects, [ String separator = '' ]) {
     bool addSeparator = false;
     for (dynamic object in objects) {
       if (addSeparator) {
@@ -285,7 +285,7 @@
   }
 
   @override
-  void addError(dynamic error, [StackTrace stackTrace]) {
+  void addError(dynamic error, [ StackTrace stackTrace ]) {
     throw UnimplementedError();
   }
 
@@ -482,7 +482,7 @@
     return null;
   }
   @override
-  Future<CompilerOutput> recompile(String mainPath, List<String> invalidatedFiles, {String outputPath, String packagesFilePath}) async {
+  Future<CompilerOutput> recompile(String mainPath, List<String> invalidatedFiles, { String outputPath, String packagesFilePath }) async {
     fs.file(outputPath).createSync(recursive: true);
     fs.file(outputPath).writeAsStringSync('compiled_kernel_output');
     return CompilerOutput(outputPath, 0);

diff --git a/packages/flutter_tools/test/version_test.dart b/packages/flutter_tools/test/version_test.dart
index 17963e3..d25c57c 100644
--- a/packages/flutter_tools/test/version_test.dart
+++ b/packages/flutter_tools/test/version_test.dart

@@ -442,7 +442,7 @@
   });
 
   final Answering<ProcessResult> syncAnswer = (Invocation invocation) {
-    bool argsAre(String a1, [String a2, String a3, String a4, String a5, String a6, String a7, String a8]) {
+    bool argsAre(String a1, [ String a2, String a3, String a4, String a5, String a6, String a7, String a8 ]) {
       const ListEquality<String> equality = ListEquality<String>();
       final List<String> args = invocation.positionalArguments.single;
       final List<String> expectedArgs = <String>[a1, a2, a3, a4, a5, a6, a7, a8].where((String arg) => arg != null).toList();