code: def get_config_keys():
      """The config keys known by vispy and their allowed data types.
  
      Returns
      -------
      keys : dict
          Dict of {key: (types,)} pairs.
      """
      global _allowed_config_keys
      return _allowed_config_keys.copy()
  
imports: import io
  import os
  from os import path
  import inspect
  import json
  import sys
  import platform
  import getopt
  import traceback
  import tempfile
  import atexit
  from shutil import rmtree
  import numpy
  from .event import EmitterGroup, EventEmitter, Event
  from .logs import logger, set_log_level, use_log_level
label_desc: Use image node_id 4 for calling a global function with example usage: get_config_keys() and returns: _allowed_config_keys