public DocumentInfoDataItem Copy()
        {
            var result = new DocumentInfoDataItem();

            result.Type             = Type;
            result.Number           = Number;
            result.IssueCountryCode = IssueCountryCode;
            result.AddedAsDOCS      = AddedAsDOCS;
            result.AddedAsFOID      = AddedAsFOID;
            result.ElapsedTime      = ElapsedTime?.Copy();

            return(result);
        }