public function addActions(InputInterface $input, OutputInterface $output, QuestionHelper $questionHelper)
 {
     $output->writeln(array('', 'Instead of starting with a blank controller, you can add some actions now. An action', 'is a PHP function or method that executes, for example, when a given route is matched.', 'Actions should be suffixed by <comment>Action</comment>.', ''));
     $actions = $this->parseActions($input->getOption('actions'));
     while (true) {
         // name
         $output->writeln('');
         $question = new Question($questionHelper->getQuestion('New action name (press <return> to stop adding actions)', null), null);
         $question->setValidator(function ($name) use($actions) {
             if (null == $name) {
                 return $name;
             }
             if (isset($actions[$name])) {
                 throw new \InvalidArgumentException(sprintf('Action "%s" is already defined', $name));
             }
             if ('Action' != substr($name, -6)) {
                 throw new \InvalidArgumentException(sprintf('Name "%s" is not suffixed by Action', $name));
             }
             return $name;
         });
         $actionName = $questionHelper->ask($input, $output, $question);
         if (!$actionName) {
             break;
         }
         // route
         /*$question = new Question($questionHelper->getQuestion('Action route', '/'.substr($actionName, 0, -6)), '/'.substr($actionName, 0, -6));
           $route = $questionHelper->ask($input, $output, $question);
           $placeholders = $this->getPlaceholdersFromRoute($route);*/
         // adding action
         $actions[$actionName] = array('name' => $actionName);
     }
     return $actions;
 }