class_docstr: ResNet model.
class_docstr_tok: ["ResNet","model","."]
code: def forward(self, x):
      x = self.stem(x)
      x1 = self.s1(x)
      x2 = self.s2(x1)
      x3 = self.s3(x2)
      x4 = self.s4(x3)
      x4_p = self.head.pool(x4)
      x4_p = x4_p.view(x4_p.size(0), -1)
      x = self.head.fc(x4_p)
      return x, x3
  
imports: import torch
  from torch import nn
label_desc: Use image node_id 3 for calling the ResNet obj's underlying member method code with example usage: obj.forward(x) and returns: x,  x3