code: def forward(self, input_):
      for pool in self.pool:
          input_ = pool(input_)
  
      return input_
  
imports: import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the InputInjection obj's underlying member method code with example usage: obj.forward(input_) and returns: input_