protected function execute(InputInterface $input, OutputInterface $output)
 {
     $view_creator = $this->neptune['view'];
     $reflection_helper = new ReflectionHelper();
     $output->writeln('<info>Available view helpers</info>');
     foreach ($view_creator->getHelpers() as $name => $helper) {
         $output->writeln($name . $reflection_helper->displayFunctionParameters($helper));
     }
 }