anchor.diff:    foo();
   }
   ''', [
  +      if (typeToStringWithNullability)
  +        error(CompileTimeErrorCode.UNCHECKED_USE_OF_NULLABLE_VALUE, 22, 3),
         error(CompileTimeErrorCode.USE_OF_VOID_RESULT, 22, 3),
       ]);
   
  
positive.code: 
    test_hasReceiver_instance_Function_call_localVariable() async {
      await assertNoErrorsInCode(r'''
  void main() {
    Function foo;
  
    foo.call(0);
  }
  
negative.code:   }
  
    test_namedArgument() async {
      var question = typeToStringWithNullability ? '?' : '';
      await assertNoErrorsInCode('''
  void foo({int$question a, bool$question b}) {}
  
  main() {
    foo(b: false, a: 0);
  