Analyzer doesn't report duplicate getter

[johnniwinther]

The analyzer fails to report duplicate getters on

class A {
  void set b(int? value) {}
  int? get b => null;
  int? get b => 0;
}

If the order of the declarations is changed to

class A {
  int? get b => null;
  void set b(int? value) {}
  int? get b => 0;
}

the error is reported:

  error • getter.dart:4:11 • The name 'b' is already defined. Try renaming one of the declarations. • duplicate_definition
           - The first definition of this name at getter.dart:2:11.