Creating your first menu

Let's see how to create a bootstrap style menu. The menu feature of MopaBootstrapBundle is totally handled by KnpMenuBundle. Here are the required steps to create a menu:

1. Go to your AppBundle and create a new folder called Menu.

2. Add a new class and name it Builder.php; the contents of this class should be as follows:

   <?php
   // mava/src/AppBundle/Menu/Builder.php
   namespace Mava\CoreBundle\Menu;
   use Knp\Menu\FactoryInterface;
   use Symfony\Component\DependencyInjection\ContainerBuilder;
   
   class Builder extends ContainerBuilder
   {
       public function topMenu(FactoryInterface $factory, array $options)
       {
           $menu = $factory->createItem('root');
           $menu->setChildrenAttribute('class', 'nav navbar-top-links navbar-right');
   
           $dropdown2 = $menu->addChild(' ', array(
               'icon' => 'bell',
               'dropdown' => true,
               'caret' => true,
           ));
   
           // Create a dropdown header
           $dropdown2->addChild('notifications...