code: def forward(self, features, summary):
      features = torch.matmul(
          features, torch.matmul(self.weight, summary)
      )
      return features
  
imports: import math
  import torch
  import torch.nn
  from gcn import GCN
label_desc: Use image node_id 4 for calling the Discriminator obj's underlying member method code with example usage: obj.forward(features, summary) and returns: features