public function get_lessons( $return = 'lessons' ) {

		$query = new WP_Query(
			array(
				'meta_key'       => '_llms_order',
				'meta_query'     => array(
					array(
						'key'   => '_llms_parent_section',
						'value' => $this->get( 'id' ),
					),
				),
				'order'          => 'ASC',
				'orderby'        => 'meta_value_num',
				'post_type'      => 'lesson',
				'posts_per_page' => 500,
			)
		);

		if ( 'ids' === $return ) {
			$ret = wp_list_pluck( $query->posts, 'ID' );
		} elseif ( 'posts' === $return ) {
			$ret = $query->posts;
		} else {
			$ret = array_map( 'llms_get_post', $query->posts );
		}

		return $ret;

	}