old_contents: from .parser import CrawledTree
  from .nodes import HostNode, URLNode, HarTreeNode
  from .har2tree import Har2Tree,  HarFile, Har2TreeLogAdapter
  from .helper import Har2TreeError
  
  import logging
  logging.getLogger(__name__).addHandler(logging.NullHandler())
  
new_contents: from .parser import CrawledTree  # noqa
  from .nodes import HostNode, URLNode, HarTreeNode  # noqa
  from .har2tree import Har2Tree, HarFile, Har2TreeLogAdapter  # noqa
  from .helper import Har2TreeError  # noqa
  
  import logging
  logging.getLogger(__name__).addHandler(logging.NullHandler())
  
subject: make flake8 happy