code: public function accounts()
      {
          if (!$this->accounts instanceof AccountsController) {
              $this->accounts = new AccountsController($this->getClient(), $this->cachePolicy, $this->cache);
              $this->accounts->setLogger($this->logger);
          }
  
          return $this->accounts;
      }
docs: Accounts control the security in QBank.
  
  @return AccountsController