code: public function deployment()
      {
          if (!$this->deployment instanceof DeploymentController) {
              $this->deployment = new DeploymentController($this->getClient(), $this->cachePolicy, $this->cache);
              $this->deployment->setLogger($this->logger);
          }
  
          return $this->deployment;
      }
docs: DeploymentSites are places where Media from QBank may be published to, to allow public access. Protocols define the way the publishing executes.
  
  @return DeploymentController