class_docstr: The class is the base class for tests under the remote module. It can provide different mocked environments for tests, and each test should inherit this class.
      Note that users **SHOULD NOT** override the setUp function, and they should implement _setUp for initialization instead.
  
  Usage: Users should inherit this class to implement the unit tests for remote modules. The class must be decorated with the env_config declared above. (e.g., @env_config_for_test at line 19)
  
  Example: Please refer to parl/remote/tests/mocking_env_test.py.
code: def setUp(self):
      return_value = mock.Mock(return_value=self.return_value)
      self.patch(self.to_mock_function, new=return_value)
      if hasattr(self, "_setUp"):
          self._setUp()
  
imports: import unittest
  from parameterized import parameterized, parameterized_class
  from unittest import mock
label_desc: Use image node_id 2 for calling the MockingEnv obj's underlying member method code with example usage: obj.setUp() without return types