code: def apply_weight_norm(self):
      self.input_conv = weight_norm(self.input_conv)
      self.output_conv = weight_norm(self.output_conv)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn.utils import weight_norm
label_desc: Use image node_id 4 for calling the FiLM obj's underlying member method code with example usage: obj.apply_weight_norm() without return types