Inheritance: INotifyPropertyChanging, INotifyPropertyChanged
 partial void DeleteProjectInvitation(ProjectInvitation instance);
 partial void UpdateProjectInvitation(ProjectInvitation instance);
		private void detach_ProjectInvitations1(ProjectInvitation entity)
		{
			this.SendPropertyChanging();
			entity.User1 = null;
		}
 partial void InsertProjectInvitation(ProjectInvitation instance);
		private void attach_ProjectInvitations(ProjectInvitation entity)
		{
			this.SendPropertyChanging();
			entity.User = this;
		}