do_action( 'restrict_manage_sites', string $which )

347			 * Fires before the Filter button on the MS sites list table.348			 *349			 * @since 5.3.0350			 *351			 * @param string $which The location of the extra table nav markup: Either 'top' or 'bottom'.352			 */353			do_action( 'restrict_manage_sites', $which );354 355			$output = ob_get_clean();356 357			if ( ! empty( $output ) ) {358				echo $output;359				submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'site-query-submit' ) );