// global Trace system to send HTTP request/response
	// and Storage/OS calls info to registered listeners.
	globalTrace = pubsub.New[madmin.TraceInfo, madmin.TraceType](8)

	// global Listen system to send S3 API events to registered listeners
	globalHTTPListen = pubsub.New[event.Event, pubsub.Mask](0)

	// global console system to send console logs to
	// registered listeners
	globalConsoleSys *HTTPConsoleLoggerSys

            3),
        rangeMap.asMapOfRanges());

    assertThrows(IllegalArgumentException.class, () -> sub.put(Range.open(9, 12), 5));

    RangeMap<Integer, Integer> subSub = sub.subRangeMap(Range.closedOpen(5, 5));
    subSub.put(Range.closedOpen(5, 5), 6); // should be a no-op
    assertEquals(
        ImmutableMap.of(
            Range.open(3, 7),
            1,
            Range.closed(7, 9),