private void detach_PartSafeties(PartSafety entity)
 {
     this.SendPropertyChanging("PartSafeties");
     entity.PartInfo = null;
 }
 private void attach_PartSafeties(PartSafety entity)
 {
     this.SendPropertyChanging("PartSafeties");
     entity.Warehouse = this;
 }