<?php wp_nav_menu( array( 'theme_location' => 'my-custom-menu', 'container_class' => 'custom-menu-class' ) ); ?> code example

Example: wp_nav_menu

wp_nav_menu( array(
    'menu' => 'TEST',
    'menu_class' => "", 
    'menu_id'   => "",
    'container' => false
) );