# Package io.flutter.embedding.engine.dart

- Interface Summary
  Interface | Description
  --- | ---
  DartExecutor.IsolateServiceIdListener | Callback interface invoked when the isolate identifier becomes available.
  PlatformMessageHandler | Handler that receives messages from Dart code.

- Class Summary
  Class | Description
  --- | ---
  DartExecutor | Configures, bootstraps, and starts executing Dart code.
  DartExecutor.DartCallback | Configuration options that specify which Dart callback function is executed and where to find that callback and other assets required for Dart execution.
  DartExecutor.DartEntrypoint | Configuration options that specify which Dart entrypoint function is executed and where to find that entrypoint and other assets required for Dart execution.
  PlatformTaskQueue | A BinaryMessenger.TaskQueue that posts to the platform thread (aka main thread).