could you please give me a torch example of xlm-roberta-(base/large) for multilingual-text question?
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## Details
I read the document of [XLM-RoBERTa](https://huggingface.co/transformers/model_doc/xlmroberta.html#overview), but i also have a lots of question. For example, `should be able to determine the correct language from the input ids.` how to determine?

If you have a example for how to use xlm-roberta about multilingual text question, please show me, Thank you very much!

