namespace System.IdentityModel.Policy { public abstract class EvaluationContext { public abstract ReadOnlyCollection<ClaimSet> ClaimSets { get; } public abstract IDictionary<string, object> Properties { get; } public abstract int Generation { get; } public abstract void AddClaimSet(IAuthorizationPolicy policy, ClaimSet claimSet); public abstract void RecordExpirationTime(DateTime expirationTime); protected EvaluationContext(); } }