src/transformers/models/m2m_100/tokenization_m2m_100.py/M2M100Tokenizer/convert_tokens_to_string
class M2M100Tokenizer:    def convert_tokens_to_string(self, tokens: List[str]) -> str:
        """Converts a sequence of tokens (strings for sub-words) in a single string."""
        return self.sp_model.decode(tokens)