original_string: protected function addNextButton()
      {
          parent::addNextButton();
  
          if (! (isset($this->formData['survey']) && $this->formData['survey'])) {
              $this->_nextButton->setAttrib('disabled', 'disabled');
          }
      }
code: protected function addNextButton()
      {
          parent::addNextButton();
  
          if (! (isset($this->formData['survey']) && $this->formData['survey'])) {
              $this->_nextButton->setAttrib('disabled', 'disabled');
          }
      }
code_tokens: protected function addNextButton ( ) { parent :: addNextButton ( ) ; if ( ! ( isset ( $ this -> formData [ 'survey' ] ) && $ this -> formData [ 'survey' ] ) ) { $ this -> _nextButton -> setAttrib ( 'disabled' , 'disabled' ) ; } }
docstring: Add the next button
docstring_tokens: Add the next button