def get_null_block(self):
        """Get empty block and title - used in REALM pretraining"""
        block, title = [], []
        block_tokens, block_pad_mask = self.concat_and_pad_tokens(block, title)

        return block_tokens, block_pad_mask
Get empty block and title - used in REALM pretraining
training/DeepSpeed-Domino/megatron/data/ict_dataset.py