/**
  * Add endpoint.
  *
  * @param string $publicUrl
  * @param string $adminUrl
  *
  * @return $this
  */
 public function addEndpoint($publicUrl, $adminUrl)
 {
     $endpoint = new Endpoint();
     $endpoint->setPublicUrl($publicUrl);
     $endpoint->setAdminUrl($adminUrl);
     $endpoint->setService($this);
     $this->endpoints[] = $endpoint;
     return $this;
 }