anchor.diff:        } else if (parameter.isNamed) {
           openGroup(_WriteFormalParameterKind.named, '{', '}');
         }
  -      _writeWithoutDelimiters(
  -        parameter,
  -        withNamesOfPositional: withNamesOfPositional,
  -        withDefaultValueCode: withDefaultValueCode,
  -      );
  +      _writeWithoutDelimiters(parameter, forElement: forElement);
       }
   
       _write(lastClose);
  
positive.code: 
      if (element.kind != ElementKind.GETTER) {
        _writeTypeParameters(element.typeParameters);
        _writeFormalParameters(element.parameters);
      }
    }
  
  
negative.code:     _writeType(type.returnType);
      _write(' Function');
      _writeTypeParameters(type.typeFormals);
      _writeFormalParameters(type.parameters, forElement: false);
      _writeNullability(type.nullabilitySuffix);
    }
  
  