code: def setUp(self):
      self.net = DenseNet121(
          spatial_dims=2, in_channels=1, out_channels=3
      )
      self.num_relus = self.get_num_modules(torch.nn.ReLU)
      self.total = self.get_num_modules()
      self.assertGreater(self.num_relus, 0)
  
file_path: MONAI/tests/test_replace_module.py
imports: from __future__ import annotations
  import unittest
  import torch
  from parameterized import parameterized
  from monai.networks.nets import DenseNet121
  from monai.networks.utils import replace_modules, replace_modules_temp
  from tests.utils import TEST_DEVICES
label_desc: Use image node_id 1 for calling the TestReplaceModule obj's underlying member method code with example usage: obj.setUp() without return types