private void detach_CategorisedItems(CategorisedItem entity)
 {
     this.SendPropertyChanging();
     entity.MenuItem = null;
 }
 private void attach_CategorisedItems(CategorisedItem entity)
 {
     this.SendPropertyChanging();
     entity.Category = this;
 }
 partial void UpdateCategorisedItem(CategorisedItem instance);
 partial void DeleteCategorisedItem(CategorisedItem instance);
 partial void InsertCategorisedItem(CategorisedItem instance);