Sulu\Bundle\CategoryBundle\Entity\Category::setDefaultLocale PHP Method

    public function setDefaultLocale($defaultLocale)
    {
        $this->defaultLocale = $defaultLocale;
        return $this;
    }

 private function createCategory($key)
 {
     $category = new Category();
     $category->setKey($key);
     $category->setDefaultLocale('en');
     $this->em->persist($category);
     return $category;
 }