wp_get_nav_menu_object() is located in wp-includes/nav-menu.php.
to get the menu by its name. use below code:
'menu' => 'your menu mane here', // pt the name of the menu that you have created in admin.
'theme_location' => '__no_such_location'
'fallback_cb' => false
Jusy Copy and paste the above code where you want to show your menus.
They need to websites that do your homework for you correct their selfportraits or revise their selfnarratives!