code: def resetCustomConfig(cls):
      
      _getLogger().info("Resetting all custom configuration properties; "
                        "caller=%r", traceback.format_stack())
  
      # Clear the in-memory settings cache, forcing reload upon subsequent "get"
      # request.
      super(Configuration, cls).clear()
  
      # Delete the persistent custom configuration store and reset in-memory
      # custom configuration info
      _CustomConfigurationFileWrapper.clear(persistent=True)
docs: Clear all custom configuration settings and delete the persistent
      custom configuration store.