code: def forward(self):
      input = torch.randn(32, 20)
      r = self.linears[0](input)
      r = self.linears[1](input)
      r = self.linears[2](input, input)
      return len(r)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the NNLinearModule obj's underlying member method code with example usage: obj.forward() and returns: len