src/transformers/models/wavlm/modeling_wavlm.py/WavLMAdapterLayer/__init__
class WavLMAdapterLayer:    def __init__(self, config):
        super().__init__()
        self.conv = nn.Conv1d(
            config.output_hidden_size,
            2 * config.output_hidden_size,
            config.adapter_kernel_size,
            stride=config.adapter_stride,
            padding=1,
        )