apply_filters( 'wp_nav_menu_args', array $args )

More Information

The “wp_nav_menu_args” filter is applied to the arguments of the wp_nav_menu() function before they are processed.

This filter can be used in functions.php of a child theme to add/remove/modify the arguments of a menu defined in the parent theme.

Also, plugins can use this filter to change menus by adding classes/IDs or using a custom walker object.