[flatbuffer] Bugfix: some class dont have __getstate__ (#76197)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/76197
some class only have setstate but not getstate. Those should be able to serialize correctly.
Test Plan:
by hand
`buck run fbcode/mode/dbg xplat/caffe2/fb/lite_predictor:convert_model -- --model=$HOME/models/pytorchmodel_from_manifold.pt --output_name=$HOME/models/pytorchmodel.ff --use_original_bytecode=1`
the model above is a .pt file created using version 4 of bytecode. In particular, __setstate__ is serialized there but __getstate__ is not.
Reviewed By: pavithranrao
Differential Revision: D35827479
fbshipit-source-id: 3d3fdb63d20d41170eac46d076b162d213169f96
(cherry picked from commit 13e966e5c62ce3faf85e8f8fe20e50ad9bb240e5)
