| // Copyright 2013 The Flutter Authors. All rights reserved. | 
 | // Use of this source code is governed by a BSD-style license that can be | 
 | // found in the LICENSE file. | 
 |  | 
 | #ifndef FLUTTER_RUNTIME_DART_PLUGIN_REGISTRANT_H_ | 
 | #define FLUTTER_RUNTIME_DART_PLUGIN_REGISTRANT_H_ | 
 |  | 
 | #include "third_party/dart/runtime/include/dart_api.h" | 
 |  | 
 | namespace flutter { | 
 |  | 
 | /// The name of the library where the Dart Plugin Registrant will be looked for. | 
 | /// This is available for testing. | 
 | extern const char* dart_plugin_registrant_library_override; | 
 |  | 
 | /// Looks for the Dart Plugin Registrant in `library_handle` and invokes it if | 
 | /// it is found. | 
 | /// @return `true` when the registrant has been invoked. | 
 | bool InvokeDartPluginRegistrantIfAvailable(Dart_Handle library_handle); | 
 |  | 
 | /// @return `true` when the registrant has been invoked. | 
 | bool FindAndInvokeDartPluginRegistrant(); | 
 |  | 
 | }  // namespace flutter | 
 |  | 
 | #endif  // FLUTTER_RUNTIME_DART_PLUGIN_REGISTRANT_H_ |