code: def test_is_package_for_unknown_module(self):
      self.assertRaises(
          ImportError,
          lambda: self.arcadia_source_finder.is_package(
              "project.lib.package2"
          ),
      )
  
imports: import stat
  import unittest
  import yaml
  from collections import namedtuple
  from unittest.mock import patch
  from parameterized import parameterized
  import __res
label_desc: Use image node_id 5 for calling the TestLibraryWithoutNamespace obj's underlying member method code with example usage: obj.test_is_package_for_unknown_module() without return types