Export pix2struct models to ONNX
How can the pix2struct models be exported to ONNX?

I think these models are not available yet to make the transformation with:
!python -m transformers.onnx --model=google/pix2struct-docvqa-base --feature=vision2seq-lm scratch/onnx --atol 1e-3

ONNX conversion is now fully handled by the `optimum` library, so you should open your issue there :-)<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md) are likely to be ignored.