def _snooze(filecnt):
    """Sleep for a little while.

        :param filecnt: The number of messages in the queue the last time
            through.  Runners can decide to continue to do work, or sleep for
            a while based on this value.  By default, the base runner only
            snoozes when there was nothing to do last time around.
        :type filecnt: int
        """
