>>> (indent 2)
  bool theMethodNameGoesHere(ParameterTyp result) => reallyLongIdentifier
      .any((MyClass myParam) => myParam.id == result.myParam.id);
<<<
  bool theMethodNameGoesHere(ParameterTyp result) => reallyLongIdentifier
      .any((MyClass myParam) => myParam.id == result.myParam.id);