public function __construct() {

		$this->course_capabilities = [
			'read_post'              => 'read_course',
			'publish_posts'          => 'publish_courses',
			'create_posts'           => 'edit_courses',
			'edit_posts'             => 'edit_courses',
			'edit_post'              => 'edit_course',
			'edit_others_posts'      => 'edit_others_courses',
			'delete_posts'           => 'delete_courses',
			'delete_others_posts'    => 'delete_others_courses',
			'read_private_posts'     => 'read_private_courses',
			'edit_private_posts'     => 'edit_private_courses',
			'delete_private_posts'   => 'delete_private_courses',
			'delete_post'            => 'delete_course',
			'edit_published_posts'   => 'edit_published_courses',
			'delete_published_posts' => 'delete_published_courses',
		];

		add_action( 'init', [ $this, 'register_course_post_type' ] );
		add_action( 'init', [ $this, 'register_course_categories' ] );
		add_action( 'init', array( $this, 'register_lecture_post_type' ) );
		add_action( 'init', array( $this, 'register_quiz_post_type' ) );


	}