code: def format_maxtime(self, maxtime):
          
          minutes = maxtime.get("minutes", "0")
          hours = maxtime.get("hours", "0")
          days = maxtime.get("days", "0")
          # days, hours, minutes
          return u"{}: {} {}: {} {}: {}".format(
              _("days"), days, _("hours"), hours, _("minutes"), minutes)
docs: Formats the max time record to a days, hours, minutes string