original_string: public function addColumn($id, $label, $type) {
          $this->cols[] = new DataColumn($id, $label, $type);
      }
code: public function addColumn($id, $label, $type) {
          $this->cols[] = new DataColumn($id, $label, $type);
      }
code_tokens: public function addColumn ( $ id , $ label , $ type ) { $ this -> cols [ ] = new DataColumn ( $ id , $ label , $ type ) ; }
docstring: Adds a column at the end of the DataTable
  @param string $id
  @param string $label
  @param string $type
docstring_tokens: Adds a column at the end of the DataTable