class_docstr: Import hook for a shim.
  
  This ensures that submodule imports return the real target module,
  not a clone that will confuse `is` and `isinstance` checks.
code: def __init__(self, src, mirror):
      self.src = src
      self.mirror = mirror
  
imports: import importlib.abc
  import importlib.util
  import sys
  import types
  from importlib import import_module
  from .importstring import import_item
label_desc: Use image node_id 1 to create a new ShimImporter object from inherited base classes: importlib.abc with example: obj = ShimImporter(src, mirror)