thanks for your answer. As far as i understand your link is focussed on version 1 of the WDC implementation. As i initially wrote this is not an issue so far. In version 2 of WDC it seems to be a significant change of the API - i was not able to find examples for paging in WDC2 nor able to find dataCallback with parameter "hasMoreData" or something similar.
Do you agree so far? Or did i overlook some details which could be helpful?