private static MomentCommentExistsResult Check(MomentCommentEntity momentComment, string message)
 {
     if (momentComment == null)
     {
         return new MomentCommentExistsResult(false, message, null);
     }
     return new MomentCommentExistsResult(true, null, momentComment);
 }
 public MomentCommentExistsResult(bool isSucceed, String message, MomentCommentEntity momentComment)
     : base(isSucceed, message)
 {
     this.MomentComment = momentComment;
 }