sidemenu-walker.php

<?php
	wp_nav_menu( 
		array( 
			'menu' => 'aside',
			'menu_class' => 'nav nav-pills nav-stacked',
			'theme_location' => 'primary', 
			'container' => false, 
			'fallback_cb' => false,
			'items_wrap' =>	'<ul id="%1$s" class="%2$s">%3$s</ul>',
			'walker' => new Secondary_Bootstrap_Nav_Walker(),
			'depth' => 2,
			'sub_menu' => true,
			'start_depth' => 2
		)
	);
?>