docs: def settime(self, time):
          """
          Set point in time used to check validity of certificates for
          Time can be either python datetime object or number of seconds
          sinse epoch
          """
          if isinstance(time, datetime) or isinstance(time,
                                                               datetime.date):
              seconds = int(time.strftime("%s"))
          elif isinstance(time, int):
              seconds = time
          else:
              raise TypeError("datetime.date, datetime.datetime or integer " +
                              "is required as time argument")
          raise NotImplementedError