partial void DeletecompanyGroupForItem(companyGroupForItem instance);
 partial void UpdatecompanyGroupForItem(companyGroupForItem instance);
		private void detach_companyGroupForItems(companyGroupForItem entity)
		{
			this.SendPropertyChanging();
			entity.companyGroup = null;
		}
 partial void InsertcompanyGroupForItem(companyGroupForItem instance);
		private void attach_companyGroupForItems(companyGroupForItem entity)
		{
			this.SendPropertyChanging();
			entity.company = this;
		}