[Plutogrid async loading] #flutter https://pub.dev/documentation/pluto_grid/latest/pluto_grid/PlutoGridStateManager-class.html

main.dart

PlutoGridStateManager.initializeRowsAsync(
  columns,
  fetchedRows,
).then((value) {
  stateManager.refRows.addAll(FilteredList(initialList: value));
  stateManager.notifyListeners();
});