public interface ITestClass
{
    Task<string> Test(string a);
    Task Test2();
    string Test3();
}

public class TestClass : ITestClass
{
    public async Task<string> Test(string a)
    {
        return a + new Random().Next(1000).ToString();
    }

    public async Task Test2()
    {        
    }

    public string Test3()
    {
        return new Random().Next(1000).ToString();
    }
}

public class TemplateInstaller : IIoCInstaller
{
    public void Install(WindsorContainer container, IMapper mapper)
    {
        var appSetting = IoC.Resolve<IAppSetting>();
        var test = RPCTransmitter<ITestClass>.Register(appSetting.GetSetting("RPCTestClass"));
        container.Register(Component.For<ITestClass>().Instance(test).LifestyleSingleton());        
    }
}

public class HomeController : Controller
{
    private readonly ITestClass _testClass;

    public HomeController(ITestClass testClass) 
    {
        _testClass = IoC.Resolve<ITestClass>();
    }

    public async Task<string> Index()
    {
        var a = await _testClass.Test("test: ");
        await _testClass.Test2();
        var b = _testClass.Test3();
        return a;
    }
}