code: def __init__(self, dim):
      super().__init__()
      self.downsample = DepthWiseConv2d(
          dim, dim * 2, kernel_size=3, stride=2, padding=1
      )
      self.cls_ff = nn.Linear(dim, dim * 2)
  
imports: from math import sqrt
  import torch
  from torch import nn, einsum
  import torch.nn.functional
  from einops import rearrange, repeat
  from einops.layers.torch import Rearrange
label_desc: Use image node_id 1 to create a new Pool object from inherited base classes: nn with example: obj = Pool(dim)