code: def test_bfloat16(self):
      self.gen_single_type_test(
          param_type=torch.bfloat16, skip_assert=True
      )
  
imports: from itertools import product
  import random
  import unittest
  import torch
  import apex
label_desc: Use image node_id 4 for calling the TestFusedAdam obj's underlying member method code with example usage: obj.test_bfloat16() without return types