  int handle_data(bufferlist& bl, off_t ofs, void **phandle, rgw_raw_obj *pobj, bool *again) override {
    return next->handle_data(bl, ofs, phandle, pobj, again);
  }
  int handle_data(bufferlist& bl, off_t ofs, void **phandle, rgw_raw_obj *pobj, bool *again) override {
    return next->handle_data(bl, ofs, phandle, pobj, again);
  }