/**
  * Save current admin password to prevent its usage when changed in the future.
  *
  * @param EventObserver $observer
  * @return void
  */
 public function execute(EventObserver $observer)
 {
     /* @var $user \Magento\User\Model\User */
     $user = $observer->getEvent()->getObject();
     if ($user->getId()) {
         $passwordHash = $user->getPassword();
         $passwordLifetime = $this->observerConfig->getAdminPasswordLifetime();
         if ($passwordLifetime && $passwordHash && !$user->getForceNewPassword()) {
             $this->userResource->trackPassword($user, $passwordHash, $passwordLifetime);
             $this->messageManager->getMessages()->deleteMessageByIdentifier('magento_user_password_expired');
             $this->authSession->unsPciAdminUserIsPasswordExpired();
         }
     }
 }