public void Can_NOT_be_plugged_in_if_plugged_type_cannot_be_cast_to_the_plugin_type()
        {
            var instance = new ConfiguredInstance(typeof (ColorRule));
            var family = new PluginFamily(typeof (IWidget));

            instance.As<IDiagnosticInstance>().CanBePartOfPluginFamily(family).ShouldBeFalse();
        }