// will raise the exception
await MessageBus.Current.Publish(new CustomerCreatedEvent(Id))

services.AddSlimMessageBus(mbb =>
{
    mbb
        .AddChildBus("Memory", builder =>
        {
            var namespaceNames = new[] { "DomainEventHandlers", "QueryHandlers", "CommandHandlers" };
            builder
                .WithProviderMemory()
                .AutoDeclareFrom(
                    typeof(CustomerCommandHandler).Assembly,
                    consumerTypeFilter: (consumerType) => Array.Exists(namespaceNames, x => consumerType.Namespace.Contains(x, StringComparison.InvariantCultureIgnoreCase)));
        })
        .AddChildBus("AzureSB", builder =>
        {
            builder
                // ...
                .WithProviderServiceBus(cfg => { });
        });
});