Function FinishSizePrefixed

native/thirdpart/flatbuffers/flatbuffers.h:2127–2130

  /// These kinds of buffers are useful for creating a stream of FlatBuffers.
  template<typename T>
  void FinishSizePrefixed(Offset<T> root,
                          const char *file_identifier = nullptr) {
    Finish(root.o, file_identifier, true);
  }

  void SwapBufAllocator(FlatBufferBuilder &other) {
    buf_.swap_allocator(other.buf_);