code: def to_twodim_list(self):
          
          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
docs: 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