Method Finish

cpp/src/arrow/ipc/read_write_test.cc:1201–1209

  }

  Status Finish(WriteStats* out_stats = nullptr) {
    RETURN_NOT_OK(writer_->Close());
    if (out_stats) {
      *out_stats = writer_->stats();
    }
    RETURN_NOT_OK(sink_->Close());
    // Current offset into stream is the end of the file
    return sink_->Tell().Value(&footer_offset_);
  }

  virtual Status ReadBatches(const IpcReadOptions& options,
                             RecordBatchVector* out_batches,