public function get_orderby() {
		return $this->orderby;
	}

	/**
	 * Get the current number of results to display per page.
	 *
	 * @since 3.28.0
	 *
	 * @return int
	 */
	public function get_per_page() {
		return $this->per_page;
	}

	/**
	 * Gets the opposite of the current order.
	 *
	 * Used to determine what order should be displayed when resorting.
	 *
	 * @since 3.2.0
	 *
	 * @return string
	 */
	protected function get_new_order( $orderby = '' ) {