code: def output_start_time(self, start_time_msec):
          '''Log a start time in the log.
          Params:
              start_time_msec time (in milliseconds) since the absolute start time (the epoch)
          '''
          self.log.write("#[StartTime: %f (seconds since epoch), %s]\n" %
                         (float(start_time_msec) / 1000.0,
                          datetime.fromtimestamp(start_time_msec).iso_format(' '))f output_start_time(self, start_time_msec):
          '''Log a start time in the log.
          Params:
              start_time_msec time (in milliseconds) since the absolute start time (the epoch)
          '''
          self.log.write("#[StartTime: %f (seconds since epoch), %s]\n" %
                         (float(start_time_msec) / 1000.0,
                          datetime.fromtimestamp(start_time_msec).iso_format(' ')))
docs: Log a start time in the log.
          Params:
              start_time_msec time (in milliseconds) since the absolute start time (the epoch)