code: def test_get_weights(self):
      params = self.model.get_weights()
      expected_params = list(self.model.parameters())
      self.assertEqual(len(params), len(expected_params))
      for i, key in enumerate(params):
          self.assertLess(
              (
                  params[key].sum().item()
                  - expected_params[i].sum().item()
              ),
              1e-5,
          )
  
imports: import numpy
  import unittest
  import os
  from copy import deepcopy
  from collections import OrderedDict
  import torch
  import torch.nn
  import torch.optim
  from parl.utils import get_gpu_count
  import parl
label_desc: Use image node_id 8 for calling the ModelBaseTest obj's underlying member method code with example usage: obj.test_get_weights() without return types