/**
  * Run an installation command.
  *
  * @param Container  $container
  * @param Dispatcher $events
  * @param            $key
  * @return bool
  */
 public function seed(Container $container, Dispatcher $events, $key)
 {
     $installers = new InstallerCollection();
     $events->fire(new StreamsHasInstalled($installers));
     /* @var Installer $installer */
     $installer = $installers->get($key);
     $container->call($installer->getTask());
     return 'true';
 }