code: def CopyToIsoFormat(cls, timestamp, timezone=pytz.UTC, raise_error=False):
      
      datetime_object = cls.CopyToDatetime(
          timestamp, timezone, raise_error=raise_error)
      return datetime_object.isoformat()
docs: Copies the timestamp to an ISO 8601 formatted string.
  
      Args:
        timestamp: The timestamp which is an integer containing the number
                   of micro seconds since January 1, 1970, 00:00:00 UTC.
        timezone: Optional timezone (instance of pytz.timezone).
        raise_error: Boolean that if set to True will not absorb an OverflowError
                     if the timestamp is out of bounds. By default there will be
                     no error raised.
  
      Returns:
        A string containing an ISO 8601 formatted date and time.