class_docstr: ZipFile subclass to ensure implicit
  dirs exist and are resolved rapidly.
code: def namelist(self):
      with contextlib.suppress(AttributeError):
          return self.__names
      self.__names = super(FastLookup, self).namelist()
      return self.__names
  
imports: import io
  import posixpath
  import zipfile
  import itertools
  import contextlib
  import sys
  import pathlib
label_desc: Use image node_id 1 for calling the FastLookup obj's underlying member method code with example usage: obj.namelist() and returns: self, self