code: def forward(self, x, *args, **kwargs):
      x = self.project_in(x)
      x = self.fn(x, *args, **kwargs)
      x = self.project_out(x)
      return x
  
imports: 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 ProjectInOut obj's underlying member method code with example usage: obj.forward(x) and returns: x