partial void DeleteGig(Gig instance);
 partial void UpdateGig(Gig instance);
		private void detach_Gigs(Gig entity)
		{
			this.SendPropertyChanging();
			entity.Venue = null;
		}
 partial void InsertGig(Gig instance);
		private void attach_Gigs(Gig entity)
		{
			this.SendPropertyChanging();
			entity.Venue = this;
		}