/// <summary> /// Synchronously executes the OAuth 2.0 Authentication Request and returns the result. /// </summary> /// <param name="authenticator">The <see cref="IPasswordGrantAuthenticator"/>.</param> /// <param name="authenticationRequest">The Authentication Request this authenticator will attempt.</param> /// <returns>An Authentication Result representing the successful authentication.</returns> /// <exception cref="Error.ResourceException">The authentication failed.</exception> public static IOauthGrantAuthenticationResult Authenticate(this IPasswordGrantAuthenticator authenticator, IPasswordGrantRequest authenticationRequest) => (authenticator as IPasswordGrantAuthenticatorSync).Authenticate(authenticationRequest);