code: def setUp(self):
      torch.manual_seed(1234)
      self.registry_loss_class = registry.get_loss_class
  
imports: import collections
  import unittest
  from unittest.mock import MagicMock
  import mmf.modules.losses
  import torch
  import torch.nn
  import torch.nn.functional
  from mmf.common.registry import registry
  from mmf.common.sample import SampleList
label_desc: Use image node_id 1 for calling the TestModuleLosses obj's underlying member method code with example usage: obj.setUp() without return types