Method AppendNull

cpp/src/arrow/json/parser.cc:247–250

  }

  Status AppendNull() {
    RETURN_NOT_OK(data_builder_.Append(0));
    return null_bitmap_builder_.Append(false);
  }

  Status AppendNull(int64_t count) {
    RETURN_NOT_OK(data_builder_.Append(count, 0));