@Override
    public void release() {
        initialreference.close();
    }
Does reference counting by putting stacktraces in a map together with an optional context.
Intended only for debugging as it is slow.
Used if system property jdisc.debug.resources=stack

@author baldersheim
jdisc_core/src/main/java/com/yahoo/jdisc/refcount/DebugReferencesWithStack.java