/**
  * @Given I create root category :arg1
  */
 public function iCreateRootCategory($arg1)
 {
     $rootCategory = $this->categoryRepository->findRootCategory();
     if ($rootCategory) {
         throw new \Exception('Root category exist with name ', $rootCategory->getName());
     }
     $category = new Category($arg1, true);
     $this->categoryRepository->add($category);
 }