Twig_Environment::setAutoReload PHP Method

    public function setAutoReload($autoReload)
    {
        $this->autoReload = (Boolean) $autoReload;
    }

 /**
  * Loads the Twig instance and registers the autoloader.
  */
 public function configure()
 {
     parent::configure();
     $this->configuration = $this->context->getConfiguration();
     // template name
     $template = sfConfig::get('sf_template');
     $templateDir = sfConfig::get('sf_template_dir') . '/' . $template;
     if (!file_exists($templateDir)) {
         throw new sfException(__METHOD__ . ": Couldn't find template " . $template);
     }
     // decorator template path
     $layoutTemplateDir = $templateDir . '/global';
     if (is_readable($layoutTemplateDir . '/' . $this->getDecoratorTemplate())) {
         $this->setDecoratorDirectory($layoutTemplateDir);
     }
     // module template path
     $moduleTemplateDir = $templateDir . '/modules/' . $this->moduleName;
     if (is_readable($moduleTemplateDir . '/' . $this->getTemplate())) {
         $this->setDirectory($moduleTemplateDir);
     }
     // init twig engine
     // empty array becuase it changes based on the rendering context
     $this->loader = new Twig_Loader_Filesystem(array());
     $this->twig = new sfTwigEnvironment($this->loader, array('cache' => sfConfig::get('sf_template_cache_dir') . '/' . $template, 'debug' => sfConfig::get('sf_debug', false), 'sf_context' => $this->context));
     if ($this->twig->isDebug()) {
         $this->twig->setAutoReload(true);
     }
     $this->loadExtensions();
 }