raise ValueError(f"Unrecognized tokenizer_type {tokenizer_type}") ValueError: Unrecognized tokenizer_type BertWordPieceCase
BertWordPieceCase is actually a builtin tokenizer inside magatron. But when I using `convert_megatron_gpt2_checkpoint.py` to convert. I got this error:

```
raise ValueError(f"Unrecognized tokenizer_type {tokenizer_type}")
ValueError: Unrecognized tokenizer_type BertWordPieceCase
```

Just wonder, how to make it support？ Does it also works If i using default `gpt2` tokenizer? Any ulternate in transformers interms of `BertWordPieceCase` ?
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.<|||||>Hey @jinfagang 
Can you kindly tell how did you incorporate BertWordPieceCase tokenizer into the Megatron model? I am trying to do the same.
Thanks!