code: def get_cache_token():
      """Returns the current ABC cache token.
  
      The token is an opaque object (supporting equality testing) identifying the
      current version of the ABC cache for virtual subclasses. The token changes
      with every call to ``register()`` on any ABC.
      """
      return ABCMeta._abc_invalidation_counter
  
file_path: cpython/Lib/_py_abc.py
imports: from _weakrefset import WeakSet
label_desc: Use image node_id 1 for calling a global function with example usage: get_cache_token() and returns: ABCMeta