public ChildInterestJoin GetById(Guid childId, Guid interestId)
 {
     return(_context.Find <ChildInterestJoin>(childId, interestId));
 }
 public XMasMotherInterestJoin GetById(Guid xMasMotherId, Guid interestId)
 {
     return(_context.Find <XMasMotherInterestJoin>(xMasMotherId, interestId));
 }