original_string: public function delete($id): ?int
    {
      return $this->db->delete($this->class_cfg['table'], [$this->fields['id'] => $id]);
    }
code: public function delete($id): ?int
    {
      return $this->db->delete($this->class_cfg['table'], [$this->fields['id'] => $id]);
    }
code_tokens: public function delete ( $ id ) : ? int { return $ this -> db -> delete ( $ this -> class_cfg [ 'table' ] , [ $ this -> fields [ 'id' ] => $ id ] ) ; }
docstring: Deletes the given permission
  
  @param $id
  @return int|null
docstring_tokens: Deletes the given permission