|  | // 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_DART_PLUGIN_REGISTRANT_H_ | 
|  | #define FLUTTER_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_DART_PLUGIN_REGISTRANT_H_ |