public DateValueQuestion(IQuestionParent parent, DateValueQuestion original)
     : base(parent, original)
 {
     base.DefaultValue = original.DefaultValue;
     base.LowerBound   = original.LowerBound;
     base.UpperBound   = original.UpperBound;
 }
 public DateValueResponse(Response response, ResponseGroup parent, DateValueQuestion question, DateTime responseValue)
 {
     this.Response      = response;
     this.Parent        = parent;
     this.Question      = question;
     this.ResponseValue = responseValue;
 }