partial void DeleteLifestyle_Trailer(Lifestyle_Trailer instance);
 partial void UpdateLifestyle_Trailer(Lifestyle_Trailer instance);
		private void detach_Lifestyle_Trailers(Lifestyle_Trailer entity)
		{
			this.SendPropertyChanging();
			entity.Trailer = null;
		}
 partial void InsertLifestyle_Trailer(Lifestyle_Trailer instance);
		private void attach_Lifestyle_Trailers(Lifestyle_Trailer entity)
		{
			this.SendPropertyChanging();
			entity.Categories = this;
		}