def METHOD_NAME(self):
    """
    Query the stage for its current position.
    """
    #
    # The purpose of the self.querying flag is to prevent build up of
    # position update requests. If there is already one in process there
    # is no point in starting another one.
    #
    if not self.querying:
        self.querying = True
        self.mustRun(task = self.stage.position)