def to_twodim_list(self):
        """Serializes the MultiDimensionalTimeSeries data into a two dimensional list of [timestamp, [values]] pairs.

        :return:    Returns a two dimensional list containing [timestamp, [values]] pairs.
        :rtype:     list
        """
        if self._timestampFormat is None:
            return self._timeseriesData

        datalist = []
        append   = datalist.append
        convert  = TimeSeries.convert_epoch_to_timestamp
        for entry in self._timeseriesData:
            append([convert(entry[0], self._timestampFormat), entry[1:]])

        return datalist
Serializes the MultiDimensionalTimeSeries data into a two dimensional list of [timestamp, [values]] pairs.

        :return:    Returns a two dimensional list containing [timestamp, [values]] pairs.
        :rtype:     list