Mixamo skeleton template

It is mentioned here [tokenizer_parts_articulationxl_256.yaml](https://github.com/VAST-AI-Research/UniRig/blob/d90e15c2c5684c79c8f4f56581e4c96e64dfde33/configs/tokenizer/tokenizer_parts_articulationxl_256.yaml#L6C3-L6C57) that mixamo is untrained, does this mean we cannot generate skeleton with bone naming according to mixamo? If there is a way please guide us.