content: from ..registry import BACKBONES
  from .resnet3d_slowfast import ResNet3dPathway
  
  
  @BACKBONES.register_module()
  class ResNet3dSlowOnly(ResNet3dPathway):
      """SlowOnly backbone based on ResNet3dPathway.
  
      Args:
          *args (arguments): Arguments same as :class:`ResNet3dPathway`.
          conv1_kernel (Sequence[int]): Kernel size of the first conv layer.
              Default: (1, 7, 7).
          conv1_stride_t (int): Temporal stride of the first conv layer.
              Default: 1.
          pool1_stride_t (int): Temporal stride of the first pooling layer.
              Default: 1.
          inflate (Sequence[int]): Inflate Dims of each block.
              Default: (0, 0, 1, 1).
          **kwargs (keyword arguments): Keywords arguments for
              :class:`ResNet3dPathway`.
      """
  
      def __init__(self,
                   *args,
                   lateral=False,
                   conv1_kernel=(1, 7, 7),
                   conv1_stride_t=1,
                   pool1_stride_t=1,
                   inflate=(0, 0, 1, 1),
                   with_pool2=False,
                   **kwargs):
          super().__init__(
              *args,
              lateral=lateral,
              conv1_kernel=conv1_kernel,
              conv1_stride_t=conv1_stride_t,
              pool1_stride_t=pool1_stride_t,
              inflate=inflate,
              with_pool2=with_pool2,
              **kwargs)
  
          assert not self.lateral
  