public void CanResolveOpenClassTypes()
 {
     var scanner = new TypeScanner(typeof(AType).Assembly);
     var matches = scanner.FindClosingImplementationsOf(typeof(OpenClass<>));
     matches.ShouldNotBeEmpty();
     matches.ShouldContain(p => p.ConcreteType == typeof(OpenClassImplementation));
     matches.ShouldNotContain(p => p.ConcreteType == typeof(OpenInterfaceImplementation));
     matches.ShouldAllBe(p => p.GenericType == typeof(OpenClass<AType>));
 }