public DocSpec_Type GetDocSpec(ExcelPackage package, string docTypeIndic, string docRefId, string corrDocRefId, string corrMessageRefId)
        {
            DocSpec_Type docSpec = new DocSpec_Type
            {
                DocTypeIndic = EnumLookup.GetOECDDocTypeIndicEnumType(docTypeIndic),
                DocRefId     = docRefId,
            };


            if (!string.IsNullOrEmpty(corrDocRefId))
            {
                docSpec.CorrDocRefId = corrDocRefId;
            }

            if (!string.IsNullOrEmpty(corrMessageRefId))
            {
                docSpec.CorrMessageRefId = corrMessageRefId;
            }


            return(docSpec);
        }