anchor.diff:        return _kernelEnumValue.documentationComment;
       }
       if (_unlinkedEnumValue != null) {
  -      return _unlinkedEnumValue?.documentationComment?.text;
  +      return _unlinkedEnumValue.documentationComment?.text;
       }
       return super.documentationComment;
     }
  
positive.code:       return _kernel.documentationComment;
      }
      if (_unlinkedEnum != null) {
        return _unlinkedEnum?.documentationComment?.text;
      }
      return super.documentationComment;
    }
  
negative.code:       return _kernel.documentationComment;
      }
      if (serializedExecutable != null) {
        return serializedExecutable.documentationComment?.text;
      }
      return super.documentationComment;
    }
  