anchor.diff:      );
     }
   
  -  test_arguments_typesPhase_kind_requiredPositional() async {
  +  test_arguments_newInstance_kind_requiredPositional() async {
       await _assertTypesPhaseArgumentsText(
         fields: {'foo': 'int'},
         constructorParametersCode: '(this.foo)',
  
positive.code:     );
    }
  
    test_arguments_typesPhase_type_string() async {
      await _assertTypesPhaseArgumentsText(
        fields: {'foo': 'String'},
        constructorParametersCode: '(this.foo)',
  
negative.code:     );
    }
  
    test_arguments_newInstance_type_null() async {
      await _assertTypesPhaseArgumentsText(
        fields: {'foo': 'Object?'},
        constructorParametersCode: '(this.foo)',
  