private static void SetupCustomConfigProviders( IDictionary <string, IAuthenticationProvider> authenticationProviders, IList <Type> discoveredProviders, ProviderConfiguration providerConfig) { authenticationProviders.ThrowIfNull("authenticationProviders"); discoveredProviders.ThrowIfNull("discoveredProviders"); providerConfig.ThrowIfNull("providerConfig"); providerConfig.Providers.ThrowIfNull("providerConfig.Providers"); foreach (ProviderKey provider in providerConfig.Providers) { var discoveredProvider = DiscoverProvider(discoveredProviders, provider); AddProviderToDictionary(authenticationProviders, discoveredProvider, false); } }