code: def _assert_equal(a, b):
      if a != b:
          raise AssertionError(f"Expected {a} == {b}")
  
imports: import os
  import unittest
  from classy_vision.optim import build_optimizer_schedulers
  from vissl.config import AttrDict
  from vissl.models import build_model
  from vissl.optimizers import get_optimizer_param_groups
  from vissl.utils.checkpoint import CheckpointFormatConverter
  from vissl.utils.hydra_config import compose_hydra_configuration, convert_to_attrdict
  from vissl.utils.test_utils import gpu_test, in_temporary_directory, run_integration_test, spawn_distributed_test
label_desc: Use image node_id 5 for calling the TestFineTuning obj's underlying member method code with example usage: obj._assert_equal(a, b) without return types