anchor.diff:        EventStreams.kGC,
         EventStreams.kTimeline,
         EventStreams.kExtension,
  -      kServiceStream,
  +      kServiceStreamNew,
  +      kServiceStreamOld,
       ];
   
       // The following streams are not yet supported by Flutter Web.
  
positive.code:           _registeredMethodsForService[e.service].add(e.method);
          }
        }
      });
  
      _isolateManager._service = service;
      _serviceExtensionManager._service = service;
  
negative.code:       try {
          await service.streamListen(id);
        } catch (e) {
          // TODO(devoncarew): Remove this check on or after approx. Oct 1 2019.
          if (id.endsWith('Logging') || id.endsWith('Service')) {
            // Don't complain about '_Logging', 'Logging', '_Service', or 'Service'
            // events (newer VMs don't the private names, and older ones don't
            // support the public ones).
          } else {
            print("Service client stream not supported: '$id'\n  $e");
          }
        }
  