code: def test_build_barron(self):
      config = self._get_config()
      crit = build_loss(config)
      self.assertTrue(isinstance(crit, BarronLoss))
      self.assertEqual(crit.size_average, config["size_average"])
      self.assertAlmostEqual(crit.alpha, config["alpha"])
      self.assertAlmostEqual(crit.c, config["c"])
  
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 4 for calling the TestBarronLoss obj's underlying member method code with example usage: obj.test_build_barron() without return types