public function hookDisplayHit($params)
 {
     $categoryRoot = new Category(Configuration::get('PS_HOME_CATEGORY'), $this->context->language->id, $this->context->shop->id);
     $categoriesHome = $categoryRoot->getSubCategoriesHit($this->context->language->id);
     //функция описана в classes Category.php
     $this->smarty->assign(array('subcategories' => $categoriesHome, 'homeSize' => Image::getSize('medium_default')));
     //print_r($categoriesHome);Получаю массив с ключами определёнными в classes Category.php
     return $this->display(__FILE__, 'blockHitscategorys.tpl');
 }