namespace System.ServiceModel.Security
{
    [ServiceContract(Name = "IWSTrust13Async", Namespace = "http://schemas.microsoft.com/ws/2008/06/identity/securitytokenservice")]
    public interface IWSTrust13AsyncContract
    {
        [OperationContract(Action = "http://docs.oasis-open.org/ws-sx/ws-trust/200512/RST/Validate", AsyncPattern = true, Name = "Trust13ValidateAsync", ReplyAction = "http://docs.oasis-open.org/ws-sx/ws-trust/200512/RSTR/ValidateFinal")]
        IAsyncResult BeginTrust13Validate(Message request, AsyncCallback callback, object state);
    }
}