anchor.diff:    // HYPERLINK ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     // TODO(ianh): deprecate this method: @NotYetDeprecated(
     //   'Use tester.binding.defaultBinaryMessenger.checkMockMessageHandler or '
  -  //   'TestDefaultBinaryMessenger.instance.defaultBinaryMessenger.checkMockMessageHandler instead. '
  +  //   'TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.checkMockMessageHandler instead. '
     //   'For the first argument, pass channel.name. '
     //   'This feature was deprecated after v2.1.0-10.0.pre.'
     // )
  
positive.code:   // HYPERLINK ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    // TODO(ianh): deprecate this method: @NotYetDeprecated(
    //   'Use tester.binding.defaultBinaryMessenger.setMockDecodedMessageHandler or '
    //   'TestDefaultBinaryMessenger.instance.defaultBinaryMessenger.setMockDecodedMessageHandler instead. '
    //   'This feature was deprecated after v2.1.0-10.0.pre.'
    // )
    void setMockMessageHandler(Future<T> Function(T? message)? handler) {
  
negative.code:   // HYPERLINK ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    // TODO(ianh): deprecate this method: @NotYetDeprecated(
    //   'Use tester.binding.defaultBinaryMessenger.checkMockMessageHandler or '
    //   'TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.checkMockMessageHandler instead.'
    //   'This feature was deprecated after v2.1.0-10.0.pre.'
    // )
    bool checkMockMessageHandler(String channel, Object? handler) {
  