/**
  * Retrieve current role
  *
  * @return string|null
  */
 public function getAclRoleId()
 {
     if ($this->_session->hasUser()) {
         return $this->_session->getUser()->getAclRole();
     }
     return null;
 }
 /**
  * {@inheritdoc}
  */
 public function getUserId()
 {
     return $this->_adminSession->hasUser() ? (int) $this->_adminSession->getUser()->getId() : null;
 }