code: def forward(self, x):
      x = x * self.weight + self.bias
      return x
  
file_path: gluon-cv/gluoncv/torch/model_zoo/action_recognition/r2plus1dv2.py
imports: import torch
  import torch.nn
label_desc: Use image node_id 2 for calling the Affine obj's underlying member method code with example usage: obj.forward(x) and returns: x