namespace Microsoft.AspNetCore.Http.Authentication
{
    [Obsolete("This is obsolete and will be removed in a future version. See https://go.microsoft.com/fwlink/?linkid=845470.")]
    public abstract class AuthenticationManager
    {
        [AsyncStateMachine(typeof(<AuthenticateAsync>d__6))]
        public virtual Task<ClaimsPrincipal> AuthenticateAsync(string authenticationScheme);
    }
}