code: def forward(self, x, **kwargs):
      cls_token, x = x[:, :1], x[:, 1:]
      x = self.fn(x, **kwargs)
      return torch.cat((cls_token, x), dim=1)
  
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 2 for calling the ExcludeCLS obj's underlying member method code with example usage: obj.forward(x) and returns: torch