(self, batch)
return batch
Pre-process batch.
    This function is not used in all nlp tasks.
Pre-process batch.
    This function is not used in all nlp tasks.
Pre - process batch . This function is not used in all nlp tasks .
def preprocess_batch(self, batch):
    """
    Pre-process batch.
    This function is not used in all nlp tasks.
    """
    return batch
def preprocess_batch ( self , batch ) : return batch