Twig_Environment::setBaseTemplateClass PHP Method

    public function setBaseTemplateClass($class)
    {
        $this->baseTemplateClass = $class;
    }

 /**
  * Configure twig environment.
  *
  * @param \Twig_Environment $environment
  * @return \Twig_Environment
  */
 protected function configure(\Twig_Environment $environment)
 {
     $environment->setBaseTemplateClass(TwigView::class);
     /**
      * Registering extensions.
      */
     foreach ($this->extensions as $extension) {
         $environment->addExtension($this->container->get($extension));
     }
     return $environment;
 }