/**
  * @param KeyPairManager $manager
  * @param KeyPairStorage $storage
  * @param ClientFactory  $clientFactory
  * @param string         $contactEmail
  */
 public function __construct(KeyPairManager $manager, KeyPairStorage $storage, ClientFactory $clientFactory, $contactEmail)
 {
     parent::__construct($manager, $storage);
     $this->clientFactory = $clientFactory;
     $this->contactEmail = $contactEmail;
 }