    def add_args(cls, parser):
        """Add model-specific arguments to the parser."""
        add_wav2vec_asr_args(parser)
        parser.add_argument(
            "--normalize",
            action="store_true",
            help="if set, normalizes input to have 0 mean and unit variance",
        )
        parser.add_argument(
            "--finetune-w2v-params",
            type=str,
            metavar="STR",
            help="comma-separated param strings to finetune.",
        )
        parser.add_argument("--w2v-freezing-updates", type=int)
        parser.add_argument("--load-pretrained-encoder-from", type=str, metavar="STR")
        Conv1dAdaptor.add_args(parser)
Add model-specific arguments to the parser.
fairseq/models/speech_to_text/xm_transformer.py