public static void TestFixtureSetup()
        {
            _memoryCache   = MemoryCache.Default;
            _cacheProvider = new TestCacheProvider(_memoryCache);

            // Setup App AAD Client
            _appConfig = new AADGraphHandler.AADGraphHandler.AADGraphHandlerConfigurationForApp
            {
                TenantId                = TenantId,
                GraphServiceRootUri     = new Uri(GraphServiceRootUri),
                AuthorityServiceRootUri = new Uri(AuthorityServiceRootUri),
                TenantDisplayName       = TenantDisplayName,
                AppClientId             = ApiAppClientId,
                AppClientSecret         = ApiAppClientSecret,
                CacheProvider           = _cacheProvider
            };
            _aadAppGraphHandler = new AADGraphHandler.AADGraphHandler(_appConfig);
        }
 public void TestFixtureTearDown()
 {
     _appConfig = null;
     _aadAppGraphHandler.Dispose();
     _aadAppGraphHandler = null;
 }