src/transformers/models/sew/modeling_sew.py/SEWUpsampling/__init__
class SEWUpsampling:    def __init__(self, config):
        super().__init__()
        self.projection = nn.Linear(config.hidden_size, config.hidden_size * config.squeeze_factor)
        self.activation = ACT2FN[config.feat_extract_activation]
        self.squeeze_factor = config.squeeze_factor