twentyseventeen_dropdown_icon_to_menu_link( string $title, WP_Post $item, stdClass $args, int $depth ): string

152function twentyseventeen_dropdown_icon_to_menu_link( $title, $item, $args, $depth ) {153	if ( 'top' === $args->theme_location ) {154		foreach ( $item->classes as $value ) {155			if ( 'menu-item-has-children' === $value || 'page_item_has_children' === $value ) {156				$title = $title . twentyseventeen_get_svg( array( 'icon' => 'angle-down' ) );157			}158		}159	}160 161	return $title;162}