public void FindAllILoggerClassTypes()
        {
            using (TestPluginManager pluginManager = new TestPluginManager())
            {
                IPluginClassesService pluginServices = new PluginServices(pluginManager) as IPluginClassesService;

                Assert.IsNotNull(pluginServices);

                List <Type> classTypes = pluginServices.GetPluginClassTypes <ILogger>();

                Assert.AreEqual(classTypes.Count, 1);

                Assert.AreEqual(classTypes[0].FullName, "PluginManager.Internal.DefaultLogger");
            }
        }