class_docstr: ZipFile subclass to ensure implicit
  dirs exist and are resolved rapidly.
code: def _name_set(self):
      with contextlib.suppress(AttributeError):
          return self.__lookup
      self.__lookup = super(FastLookup, self)._name_set()
      return self.__lookup
  
imports: import io
  import posixpath
  import zipfile
  import itertools
  import contextlib
  import sys
  import pathlib
label_desc: Use image node_id 2 for calling the FastLookup obj's underlying member method code with example usage: obj._name_set() and returns: self, self