docs: def _determine_timeinterval(self):
          """Return a dictionary with two datetime objects, start_time and end_time,
          covering the interval of the training job
          """
          description = self._sage_client.describe_training_job(TrainingJobName=self.name)
          start_time = self._start_time or description[u'TrainingStartTime']  # datetime object
          # Incrementing end time by 1 min since CloudWatch drops seconds before finding the logs.
          # This results in logs being searched in the time range in which the correct log line was not present.
          # Example - Log time - 2018-10-22 08:25:55
          #           Here calculated end time would also be 2018-10-22 08:25:55 (without 1 min addition)
          #           CW will consider end time as 2018-10-22 08:25 and will not be able to search the correct log.
          end_time = self._end_time or description.get(
              u'TrainingEndTime', datetime.datetime.utcnow()) + datetime.timedelta(minutes=1)
  
          return {
              'start_time': start_time,
              'end_time': end_time,
          }