code: def forward(self, img):
      x = self.img_to_tokens(img)
  
      x = self.transformer(x)
  
      cls_tokens = x[:, 0]
      return self.mlp_head(cls_tokens)
  
imports: import torch
  from torch import nn
  import torch.nn.functional
  from einops import rearrange, repeat
  from einops.layers.torch import Rearrange
label_desc: Use image node_id 3 for calling the ViT obj's underlying member method code with example usage: obj.forward(img) and returns: self