Sulu\Bundle\AdminBundle\Navigation\NavigationItem::hasChildren PHP Method

    public function hasChildren()
    {
        return count($this->getChildren()) > 0;
    }

 public function __construct(SecurityCheckerInterface $securityChecker, $title)
 {
     $this->securityChecker = $securityChecker;
     $rootNavigationItem = new NavigationItem($title);
     $section = new NavigationItem('');
     $media = new NavigationItem('navigation.media');
     $media->setIcon('image');
     if ($this->securityChecker->hasPermission('sulu.media.collections', 'view')) {
         $collections = new DataNavigationItem('navigation.media.collections', '/admin/api/collections?sortBy=title', $media);
         $collections->setId('collections-edit');
         $collections->setAction('media/collections/root');
         $collections->setInstanceName('collections');
         $collections->setDataNameKey('title');
         $collections->setDataResultKey('collections');
         $collections->setShowAddButton(true);
         $collections->setTitleTranslationKey('navigation.media.collections');
         $collections->setNoDataTranslationKey('');
         $collections->setAddButtonTranslationKey('navigation.media.collections.add');
         $collections->setSearchTranslationKey('navigation.media.collections.search');
     }
     if ($media->hasChildren()) {
         $section->addChild($media);
         $rootNavigationItem->addChild($section);
     }
     $this->setNavigation(new Navigation($rootNavigationItem));
 }