Parameters

$nav_menu_args

(array) An array of arguments passed to wp_nav_menu() to retrieve a navigation menu.

• 'fallback_cb'
  (callable|bool) Callback to fire if the menu doesn't exist. Default empty.
• 'menu'
  (mixed) Menu ID, slug, or name.

$nav_menu

(WP_Term) Nav menu object for the current menu.

$args

(array) Display arguments for the current widget.

$instance

(array) Array of settings for the current widget.