onResult method
Implementation
void onResult(Future<dynamic> Function(MethodCall call) handler){
throw UnimplementedError('onResult(Future<dynamic> Function(MethodCall call) handler) has not been implemented.');
}
void onResult(Future<dynamic> Function(MethodCall call) handler){
throw UnimplementedError('onResult(Future<dynamic> Function(MethodCall call) handler) has not been implemented.');
}