Method ReadMetadata

cpp/src/arrow/filesystem/gcsfs.cc:169–173

@{ @name InputStream

  //@{
  // @name InputStream
  Result<std::shared_ptr<const KeyValueMetadata>> ReadMetadata() override {
    auto metadata = client_.GetObjectMetadata(path_.bucket, path_.object, generation_);
    ARROW_GCS_RETURN_NOT_OK(metadata.status());
    return internal::FromObjectMetadata(*metadata);
  }
  //@}

 private: