code: def __init__(self, *args, **kwargs):
      super(TestLamb, self).__init__(*args, **kwargs)
      self.ref_optim = RefLAMB
      self.tst_optim = apex.optimizers.FusedLAMB
  
imports: import unittest
  import os
  import torch
  from torch.optim import Optimizer
  import apex
  from apex.multi_tensor_apply import multi_tensor_applier
  from itertools import product
label_desc: Use image node_id 1 to create a new TestFusedLAMB object from inherited base classes: TestLamb with example: obj = TestFusedLAMB()