public function register(): void {
		$this->container->singleton( Callback_Add_Edit::class, Callback_Add_Edit::class );
		$this->container->singleton( Callback_Listing::class, Callback_Listing::class );
		$this->container->singleton( Organizer_Callback::class, Organizer_Callback::class );
		$this->container->singleton( Venue_Callback::class, Venue_Callback::class );
	}