public void GetAllowedServices_ImplementationTypeNullValueGiven_ShouldThrowArgumentNullException()
                {

                    var serviceExtractor = new ServiceExtractor();		 

                    serviceExtractor.GetAllowedServices(null, new [] {ProxyGenerator.CreateProxy<Type>(), ProxyGenerator.CreateProxy<Type>()});		 

                }
                public void GetAllowedServices_ServicesNullValueGiven_ShouldThrowArgumentNullException()
                {

                    var serviceExtractor = new ServiceExtractor();		 

                    serviceExtractor.GetAllowedServices(ProxyGenerator.CreateProxy<Type>(), null);		 

                }