src/transformers/models/conditional_detr/modeling_conditional_detr.py/ConditionalDetrFrozenBatchNorm2d/__init__
class ConditionalDetrFrozenBatchNorm2d:    def __init__(self, n):
        super().__init__()
        self.register_buffer("weight", torch.ones(n))
        self.register_buffer("bias", torch.zeros(n))
        self.register_buffer("running_mean", torch.zeros(n))
        self.register_buffer("running_var", torch.ones(n))