code: def Aggregate(dim, dim_out):
      return nn.Sequential(
          nn.Conv2d(dim, dim_out, 3, padding=1),
          LayerNorm(dim_out),
          nn.MaxPool2d(3, stride=2, padding=1),
      )
  
imports: from functools import partial
  import torch
  from torch import nn, einsum
  from einops import rearrange
  from einops.layers.torch import Rearrange, Reduce
label_desc: Use image node_id 2 for calling a global function with example usage: Aggregate(dim, dim_out) and returns: nn