CQRSMicroservices.Framework.Event.ToJson C# (CSharp) Method

    public abstract string ToJson();
  }

 public override async Task Dispatch(Event @event)
 {
   List<QueryModelBuilder> handlers;
   if(_handlers.TryGetValue(@event.GetType(), out handlers))
   {
     await Task.WhenAll(
       handlers.Select(b =>
       {
         var builderType = b.GetType();
         var queryModelBuilderService = ServiceProxy.Create<IQueryModelBuilderService>(
           $"{builderType.FullName}, {builderType.Assembly.GetName().Name}",
           new Uri("fabric:/CQRSMicroservices.ServiceFabric.Application/QueryModelBuilderService"
         ));
         return queryModelBuilderService.Handle(@event.ToJson());
       })
     );
   }
   else
   {
     throw new NotImplementedException($"No handler for eventtype {@event.GetType().FullName}");
   }
 }