def METHOD_NAME(planes, num_channels_per_group=32):
    print("num_channels_per_group:{}".format(num_channels_per_group))
    if num_channels_per_group > 0:
        return GroupNorm2d(
            planes, num_channels_per_group, affine=True, track_running_stats=False
        )
    else:
        return nn.BatchNorm2d(planes)