Test host as "builder"?

[joro550]

I was wondering what your thoughts would be in having a "fluent" or "builder" type api for the Test host:

var host = new TestHost()
    .AddService<Service1>()
    .AddService<Service2>()
    .AddComponent<MyComponent>();

vs current:

var host = new TestHost();
host.AddService<Service1>();
host.AddService<Service2>();
host.AddComponent<MyComponent>();

Would make it look a lot nicer with multiple services, in essence we're using the AddComponent method as what is more generally called Build