original_string: public function getLastName()
      {
          $lastname = '';
          if (!empty($this->_gemsData['grs_surname_prefix'])) {
              $lastname .= $this->_gemsData['grs_surname_prefix'] . ' ';
          }
          $lastname .= $this->_gemsData['grs_last_name'];
          return $lastname;
      }
code: public function getLastName()
      {
          $lastname = '';
          if (!empty($this->_gemsData['grs_surname_prefix'])) {
              $lastname .= $this->_gemsData['grs_surname_prefix'] . ' ';
          }
          $lastname .= $this->_gemsData['grs_last_name'];
          return $lastname;
      }
code_tokens: public function getLastName ( ) { $ lastname = '' ; if ( ! empty ( $ this -> _gemsData [ 'grs_surname_prefix' ] ) ) { $ lastname .= $ this -> _gemsData [ 'grs_surname_prefix' ] . ' ' ; } $ lastname .= $ this -> _gemsData [ 'grs_last_name' ] ; return $ lastname ; }
docstring: Get Last name of respondent
  @return string
docstring_tokens: Get Last name of respondent