code: def test_is_file(self):
      self.assertEqual(MultiplexedPath(self.folder).is_file(), False)
  
imports: import os.path
  import sys
  import pathlib
  import unittest
  from importlib import import_module
  from importlib.readers import MultiplexedPath, NamespaceReader
label_desc: Use image node_id 7 for calling the MultiplexedPathTest obj's underlying member method code with example usage: obj.test_is_file() without return types