src/transformers/models/data2vec/modeling_data2vec_audio.py/Data2VecAudioFeatureEncoder/__init__
class Data2VecAudioFeatureEncoder:    def __init__(self, config):
        super().__init__()
        self.conv_layers = nn.ModuleList(
            [Data2VecAudioConvLayer(config, layer_id=i) for i in range(config.num_feat_extract_layers)]
        )
        self.gradient_checkpointing = False
        self._requires_grad = True