original_string: public function getLabels() {
          $labels = array();
          foreach ($this->cols as $col) {
              $labels[] = $col->getLabel();
          }
          return $labels;
      }
code: public function getLabels() {
          $labels = array();
          foreach ($this->cols as $col) {
              $labels[] = $col->getLabel();
          }
          return $labels;
      }
code_tokens: public function getLabels ( ) { $ labels = array ( ) ; foreach ( $ this -> cols as $ col ) { $ labels [ ] = $ col -> getLabel ( ) ; } return $ labels ; }
docstring: Returns all the column labels
  @return array
docstring_tokens: Returns all the column labels