code: def forward(self, x):
      alpha = torch.ones_like(x)
      beta = torch.ones_like(x)
  
      alpha[:, self.clss] = self.alpha
      beta[:, self.clss] = self.beta
  
      return alpha * x + beta
  
imports: import torch
label_desc: Use image node_id 2 for calling the BiasLayer obj's underlying member method code with example usage: obj.forward(x) and returns: unknown