public virtual void Configure(IConfiguration configuration, IClientBuilder clientBuilder)
 => clientBuilder
 .AddServiceBusStreams(Constants.ServiceBusStreamProvider, streamConfigurator =>
 {
     streamConfigurator.Configure(options =>
     {
         options.ConnectionString = TestBase.ConnectionString;
     });
 })
 .ConfigureApplicationParts(parts =>
                            parts.AddApplicationPart(typeof(LoopbackGrain).Assembly).WithReferences());
 /// <summary>
 /// Configure cluster client to use Service Bus persistent streams.
 /// </summary>
 public static IClientBuilder AddServiceBusStreams(this IClientBuilder builder,
                                                   string name, Action <OptionsBuilder <ServiceBusOptions> > configureOptions)
 {
     builder.AddServiceBusStreams(name, b => b.ConfigureServiceBus(configureOptions));
     return(builder);
 }