code: def test_iter_modules(self, package_prefix, expected):
      got = self.arcadia_source_finder.iter_modules(
          package_prefix, "PFX."
      )
      assert expected == set(got)
  
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 6 for calling the TestNamespaceAndTopLevelLibraries obj's underlying member method code with example usage: obj.test_iter_modules(package_prefix, expected) without return types