// fetch by Foreign key into new List of class instances
 // links:
 //  docLink: http://sql2x.org/documentationLink/a7599485-4f00-4ebf-974d-53f69c43654e
 public List <CrudeProductGatherSourceContract> FetchByProductGatherId(System.Guid productGatherId)
 {
     return(DataListToContractList(CrudeProductGatherSourceData.FetchByProductGatherId(productGatherId)));
 }