code: public function getChangeEmailForm()
      {
          if (null === $this->changeEmailForm) {
              $sm = $this->getServiceLocator();
              $this->setChangeEmailForm($sm->getServiceLocator()
                  ->get($this->formElementManager)->get('CmsUser\\Form\\ChangeEmail'));
          }
  
          return $this->changeEmailForm;
      }
docs: {@inheritDoc}