src/transformers/models/led/modeling_led.py/LEDEncoderAttention/__init__
class LEDEncoderAttention:    def __init__(self, config, layer_id):
        super().__init__()
        self.longformer_self_attn = LEDEncoderSelfAttention(config, layer_id=layer_id)
        self.output = nn.Linear(config.d_model, config.d_model)