Easy assert-from-query using java api?

Hello,

I'm sorry if I'm missing the obvious but there seems to be no
immediate way of making an assert-from-query using the Java API. I'm
not proficient with Java (I'm using the PLM jars with Clojure) and my
intuition is very limited here. I'm a bit concerned in particular if I
have to go into the bowels of propositions, iterators and so on.

Is there any available document that I have missed? If none, would
anybody have a hint?

many thanks
pierre