What would be the easiest way to get all user stories for a Portfolio Item in rally API? -

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what easiest way user stories portfolio item in rally api? right now, api returns immediate children.
similar previous question, there way filter using api in such way related user stories?

currently performance reasons results wsapi are limited 1 level of hierarchy. once have immediate children results first query have loop on each 1 , issue new query children (and forth recursively until have leaf children).

are doing in app? can little challenging manage async callbacks , stitch data correctly rallydatasource should @ least making querying part simpler...


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