code: def setUp(self) -> None:
      self.bn1 = nn.BatchNorm1d(4)
      self.bn2 = nn.BatchNorm2d(4)
      self.bn3 = nn.BatchNorm3d(4)
      self.bns = nn.SyncBatchNorm(4)
      self.mv = ModuleValidator.VALIDATORS
      self.mf = ModuleValidator.FIXERS
  
file_path: opacus/opacus/tests/validators/batch_norm_test.py
imports: import unittest
  import torch.nn
  from opacus.validators.errors import ShouldReplaceModuleError
  from opacus.validators.module_validator import ModuleValidator
label_desc: Use image node_id 1 for calling the BatchNormValidator_test obj's underlying member method code with example usage: obj.setUp() without return types