core/NavbarWalker.php
public function end_lvl(&$output, $depth = 0, $args = [])
    {
        $indent = str_repeat('    ', $this->indent + $depth + 1);
        $output .= sprintf('%s</ul>%s', $indent, PHP_EOL);
    }
public function end_lvl(&$output, $depth = 0, $args = [])
    {
        $indent = str_repeat('    ', $this->indent + $depth + 1);
        $output .= sprintf('%s</ul>%s', $indent, PHP_EOL);
    }
public function end_lvl ( & $ output , $ depth = 0 , $ args = [ ] ) { $ indent = str_repeat ( '    ' , $ this -> indent + $ depth + 1 ) ; $ output .= sprintf ( '%s</ul>%s' , $ indent , PHP_EOL ) ; }
Ends the list of after the elements are added

@param string  $output Passed by reference. Used to append additional content.
@param integer $depth  Depth of menu item. Used for padding.
@param array   $args   An array of arguments.

@see \Walker::end_lvl()
Ends the list of after the elements are added