def METHOD_NAME(self):
    """Shorten an interval moved to span an exclusion."""
    self.t.configure_exclusions([(time(16, 30, 0), time(7, 30, 0)),
                                 (time(12, 0, 0), time(13, 0, 0))])
    self.t('track 20170308T140000 - 20170308T161500')
    self.t("move @1 20170308T113000")
    self.t("shorten @1 5min")  # Does not work.