code: def __init__(
      self,
      temporal_kernel,
      spatial_kernel,
      input_planes,
      stem_planes,
      maxpool,
  ):
      super(R2Plus1DStem, self).__init__(
          temporal_kernel,
          spatial_kernel,
          input_planes,
          stem_planes,
          maxpool,
      )
  
imports: from typing import Sequence
  import torch.nn
  from .r2plus1_util import r2plus1_unit
label_desc: Use image node_id 1 to create a new R2Plus1DStem object from inherited base classes: ResNeXt3DStem with example: obj = R2Plus1DStem(temporal_kernel, spatial_kernel, input_planes, stem_planes, maxpool)