public virtual int _GetUniqueIdentifier() { var hashCode = 399326290; hashCode = hashCode * -1521134295 + (Id?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (PODNumber?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (DateIssued?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (QualityStatus?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (QuantityStatus?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (DeliveryStatus?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (PODAttachment?.GetHashCode() ?? 0); hashCode = hashCode * -1521134295 + (Comments?.GetHashCode() ?? 0); return(hashCode); }