public static function get_settings_tabs() {

		if ( empty( self::$settings ) ) {
			$settings = array();

			$settings[] = include 'settings/class.llms.settings.general.php';
			$settings[] = include 'settings/class.llms.settings.courses.php';
			$settings[] = include 'settings/class.llms.settings.memberships.php';
			$settings[] = include 'settings/class.llms.settings.accounts.php';
			$settings[] = include 'settings/class.llms.settings.checkout.php';
			$settings[] = include 'settings/class.llms.settings.engagements.php';
			$settings[] = include 'settings/class.llms.settings.notifications.php';
			$settings[] = include 'settings/class.llms.settings.integrations.php';

			/**
			 * Allow 3rd parties to add or remove setting pages.
			 *
			 * @since 1.0.0
			 *
			 * @param LLMS_Settings_Page[] $settings Setting page objects.
			 */
			self::$settings = apply_filters( 'lifterlms_get_settings_pages', $settings );
		}

		return self::$settings;
	}