anchor.diff:      'ext.dart.io.getHttpEnableTimelineLogging';
   const String kHttpEnableTimelineLogging =
       'ext.dart.io.httpEnableTimelineLogging';
  +
   Future<void> setup() async {}
   
   Future<void> waitForStreamEvent(
  
positive.code:   await service.streamListen(EventStreams.kExtension);
  
    if (useSetter) {
      await service.setHttpEnableTimelineLogging(isolateId, state);
    } else {
      await service.httpEnableTimelineLogging(isolateId, state);
  
negative.code:   },
    (VmService service, IsolateRef isolateRef) async {
      final isolateId = isolateRef.id;
      // ignore: deprecated_member_use_from_same_package
      dynamic response = await service.getHttpEnableTimelineLogging(isolateId);
      expect(response.enabled, false);
  
      await waitForStreamEvent(service, isolateRef, true);
      // ignore: deprecated_member_use_from_same_package
      response = await service.getHttpEnableTimelineLogging(isolateId);
      expect(response.enabled, true);
  
      await waitForStreamEvent(service, isolateRef, false);
      // ignore: deprecated_member_use_from_same_package
      response = await service.getHttpEnableTimelineLogging(isolateId);
      expect(response.enabled, false);
    },
  