getRows abstract method
Override this method to allow the data source asynchronously
fetch count
data beginning from start
(e.g. from a server) and convert
them to DataRow/DataRow2 entities consumed by AsyncPaginatedDataTable2 widget.
Note that besides rows this method is also supposed to return
the total number of available rows (both values are packed into AsyncRowsResponse instance
returned from this method)
Implementation
Future<AsyncRowsResponse> getRows(int startIndex, int count);