get sub-collections

[vronk]

getCollections-function does not seem to work correctly on subcollections. If we take for example the collection:
ANDES test-hdl:1839/00-0000-0000-0003-A5FA-7
and want to call the children of it:
​http://demo.spraakdata.gu.se/clarin/cmd/model/stats?operation=getCollections&collection=test-hdl:1839/00-0000-0000-0003-A5FA-7&maxdepth=1

it takes a) terribly long, and returns b) only the collection itself, not the children.
With maxdepth=2:
​http://demo.spraakdata.gu.se/clarin/cmd/model/stats?operation=getCollections&collection=test-hdl:1839/00-0000-0000-0003-A5FA-7&maxdepth=2
we get the children, but that does not seem right, right?

And it all takes unacceptably long!