code: def forward(self, x):
      *_, h, w = x.shape
  
      pos_emb = self.pos_emb[: (h * w)]
      pos_emb = rearrange(pos_emb, "(h w) -> () () h w", h=h, w=w)
      x = x + pos_emb
  
      for attn, ff in self.layers:
          x = attn(x) + x
          x = ff(x) + x
      return x
  
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 the Transformer obj's underlying member method code with example usage: obj.forward(x) and returns: x