getAllDatumDetails method
Retrieves the datum details for all data on the chart.
Implementation
List<DatumDetails<D>> getAllDatumDetails(
    {bool includeOverlaySeries = false}) {
  final details = <DatumDetails<D>>[];
  if (_currentSeriesList == null) {
    return details;
  }
  for (final series in _currentSeriesList!) {
    final rendererId = series.getAttr(rendererIdKey);
    if (!includeOverlaySeries && series.overlaySeries) {
      continue;
    }
    for (dynamic datum in series.data) {
      details.add(getSeriesRenderer(rendererId)
          .getDetailsForSeriesDatum(SeriesDatum<D>(series, datum)));
    }
  }
  return details;
}