namespace Microsoft.AspNetCore.Authentication
{
    public abstract class SignInAuthenticationHandler<TOptions> : SignOutAuthenticationHandler<TOptions!>, IAuthenticationHandler, IAuthenticationSignInHandler, IAuthenticationSignOutHandler
        where TOptions, new(), AuthenticationSchemeOptions!
    {
        [Obsolete("ISystemClock is obsolete, use TimeProvider on AuthenticationSchemeOptions instead.")]
        public SignInAuthenticationHandler(IOptionsMonitor<TOptions!>! options, ILoggerFactory! logger, UrlEncoder! encoder, ISystemClock! clock);
    }
}