private void detach_DrugFormularyItems(DrugFormularyItem entity)
 {
     this.SendPropertyChanging("DrugFormularyItems");
     entity.RbDrug = null;
 }
 private void attach_DrugFormularyItems(DrugFormularyItem entity)
 {
     this.SendPropertyChanging("DrugFormularyItems");
     entity.DrugFormulary = this;
 }