Closure folding of Runnables

What are the rules for the Closure folding feature in Maia?  I was expecting to see my anonymously declared Runnables shown folded, but they don't.  Here's an example:


        callCounter.systemEntryPointCalled(new Runnable() {
            @Override
            public void run() {
                onSystemEntryPointCalled();
            }
        });

It would be nice to see this folded like listeners:


        callCounter.systemEntryPointCalled(Runnable() {onSystemEntryPointCalled();});