private void detach_ContentItems(ContentItem entity)
		{
			this.SendPropertyChanging();
			entity.TextBlock = null;
		}
 partial void DeleteContentItem(ContentItem instance);
 partial void UpdateContentItem(ContentItem instance);
 partial void InsertContentItem(ContentItem instance);
		private void detach_ContentItems(ContentItem entity)
		{
			this.SendPropertyChanging();
			entity.ContentType = null;
		}
		private void attach_ContentItems(ContentItem entity)
		{
			this.SendPropertyChanging();
			entity.ContentItem1 = this;
		}