[Exist-open] list all collections?

[Brad G. <br...@fo...>]

Sorry if this is a newbie question, but I've only been using exist for
about a week now. Anyway:

Is there an efficient way to retrieve a list of *all* collections &
sub-collections under a given collection? I've written a function to do it
by recursively calling listCollection, but it's pretty slow.

Cheers,

Brad