public void NominalCollection()
{
//Configuration
_sut.Register <IHandlerClass, HandlerClass>(LifeTime.Singleton);
_sut.RegisterOrAppendCollection <IPluginClass>(LifeTime.Singleton, typeof(PluginClass1), typeof(PluginClass2), typeof(PluginClass3));
//Test
var res = _sut.Resolve <IHandlerClass>();
//Verify
Assert.AreEqual(3, res.Plugins.Count);
Assert.IsTrue(res.Plugins.Any(o => o is PluginClass1));
Assert.IsTrue(res.Plugins.Any(o => o is PluginClass2));
Assert.IsTrue(res.Plugins.Any(o => o is PluginClass3));
}