Piwik\Category\CategoryList::addCategory PHP Метод

    public function addCategory(Category $category)
    {
        $categoryId = $category->getId();
        if ($this->hasCategory($categoryId)) {
            throw new \Exception(sprintf('Category %s already exists', $categoryId));
        }
        $this->categories[$categoryId] = $category;
    }

 /**
  * @return CategoryList
  */
 public static function get()
 {
     $list = new CategoryList();
     $categories = StaticContainer::get('Piwik\\Plugin\\Categories');
     foreach ($categories->getAllCategories() as $category) {
         $list->addCategory($category);
     }
     // move subcategories into categories
     foreach ($categories->getAllSubcategories() as $subcategory) {
         $categoryId = $subcategory->getCategoryId();
         if (!$categoryId) {
             continue;
         }
         if ($list->hasCategory($categoryId)) {
             $category = $list->getCategory($categoryId);
         } else {
             $category = new Category();
             $category->setId($categoryId);
             $list->addCategory($category);
         }
         $category->addSubcategory($subcategory);
     }
     return $list;
 }