src/transformers/models/conditional_detr/modeling_conditional_detr.py/ConditionalDetrMLPPredictionHead/__init__
class ConditionalDetrMLPPredictionHead:    def __init__(self, input_dim, hidden_dim, output_dim, num_layers):
        super().__init__()
        self.num_layers = num_layers
        h = [hidden_dim] * (num_layers - 1)
        self.layers = nn.ModuleList(nn.Linear(n, k) for n, k in zip([input_dim] + h, h + [output_dim]))