code: def locate_config():
      """Returns the path to the :class:`FiftyOneConfig` on disk.
  
      The default location is ``~/.fiftyone/config.json``, but you can override
      this path by setting the ``FIFTYONE_CONFIG_PATH`` environment variable.
  
      Note that a config file may not actually exist on disk.
  
      Returns:
          the path to the :class:`FiftyOneConfig` on disk
      """
      if "FIFTYONE_CONFIG_PATH" not in os.environ:
          return foc.FIFTYONE_CONFIG_PATH
  
      return os.environ["FIFTYONE_CONFIG_PATH"]
  
imports: import logging
  import os
  import pytz
  import eta
  import eta.core.config
  import fiftyone.constants
  import fiftyone.core.utils
label_desc: Use image node_id 1 for calling a global function with example usage: locate_config() and returns: os, foc