def METHOD_NAME(cls, args, task):
    """Build a new model instance."""
    conv_enc_config = getattr(args, "conv_enc_config", default_conv_enc_config)
    encoder = W2lConvGluEncoder(
        vocab_size=len(task.target_dictionary),
        input_feat_per_channel=args.input_feat_per_channel,
        in_channels=args.in_channels,
        conv_enc_config=eval(conv_enc_config),
    )
    return cls(encoder)