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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def formatTime(self, record, datefmt=None):
 """Format the log timestamp."""

        _seconds_fraction = record.created - int(record.created)
        _datetime_utc = time.mktime(time.gmtime(record.created))
        _datetime_utc += _seconds_fraction
        _created = self.converter(_datetime_utc)

        if datefmt:
            time_string = _created.strftime(datefmt)
        else:
            time_string = _created.strftime('%Y-%m-%dT%H:%M:%S.%fZ')
            time_string = "%s,%03d" % (time_string, record.msecs)
        return time_string