std::to_string(content.size()) + " bytes")
              .c_str());
    return content;
  }

 protected:
  TF_Filesystem* filesystem_;
  TF_Status* status_;

 private:
  std::string root_dir_;
};

::testing::AssertionResult WriteToServer(const std::string& path, size_t offset,
                                         size_t length, gcs::Client* gcs_client,