src/transformers/models/xlm_roberta_xl/modeling_xlm_roberta_xl.py/XLMRobertaXLLMHead/_tie_weights
class XLMRobertaXLLMHead:    def _tie_weights(self):
        # To tie those two weights if they get disconnected (on TPU or when the bias is resized)
        self.bias = self.decoder.bias