private void detach_UniqueItem(UniqueItem entity)
 {
     this.SendPropertyChanging();
     entity.Part = null;
 }
 private void attach_UniqueItem(UniqueItem entity)
 {
     this.SendPropertyChanging();
     entity.Part = this;
 }
 partial void UpdateUniqueItem(UniqueItem instance);
 partial void DeleteUniqueItem(UniqueItem instance);
 partial void InsertUniqueItem(UniqueItem instance);