public void RemoveListener()
{
_context.Register(typeof(NonSharedComponent));
var listener = new CountingCompositionListener();
_context.RegisterCompositionListener("counter", listener);
_context.GetComponent <ISampleContract>();
_context.GetComponent <ISampleContract>();
_context.UnregisterCompositionListener("counter");
_context.GetComponent <ISampleContract>();
_context.GetComponent <ISampleContract>();
_context.GetComponent <ISampleContract>();
Assert.AreEqual(2, listener.OnComponentCreatedCount);
Assert.AreEqual(2, listener.OnComponentComposedCount);
Assert.AreEqual(2, listener.OnComponentRetrievedCount);
}