code: def forward(self):
      return self.weight
  
imports: from mpu import layers
  from commons import set_random_seed
  from commons import print_separator
  from commons import initialize_distributed
  import mpu
  from torch.nn.parameter import Parameter
  import torch.nn.init
  import torch
  import random
  import sys
label_desc: Use image node_id 2 for calling the IdentityLayer2D obj's underlying member method code with example usage: obj.forward() and returns: self