code: def test_deep_copy(self):
      config = self._get_config()
      crit1 = build_loss(config)
      self.assertTrue(isinstance(crit1, BarronLoss))
      outputs = self._get_outputs()
      targets = self._get_targets()
      crit1(outputs, targets)
  
      crit2 = copy.deepcopy(crit1)
      self.assertAlmostEqual(
          crit1(outputs, targets).item(), crit2(outputs, targets).item()
      )
  
file_path: ClassyVision/test/losses_barron_loss_test.py
imports: import copy
  import unittest
  import torch
  from classy_vision.losses import BarronLoss, build_loss
label_desc: Use image node_id 6 for calling the TestBarronLoss obj's underlying member method code with example usage: obj.test_deep_copy() without return types