anchor.diff:  
   import 'dart:async';
   
  +import 'package:test/test.dart';
  +import 'package:vm_service/src/dart_io_extensions.dart';
   import 'package:vm_service/vm_service.dart';
  -import 'package:vm_service/src/dart_io_extensions.dart';
  -import 'package:test/test.dart';
  +
   import 'common/service_test_common.dart';
   import 'common/test_helper.dart';
   
  
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);
    },
  