Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.IdentityModel/System/IdentityModel/Policy/AuthorizationContext.cs

@@ -0,0 +1,24 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.IdentityModel.Policy
+{
+    using System.Collections;
+    using System.Collections.ObjectModel;
+    using System.Collections.Generic;
+    using System.IdentityModel.Claims;
+
+    public abstract class AuthorizationContext : IAuthorizationComponent
+    {
+        public abstract string Id { get; }
+        public abstract ReadOnlyCollection<ClaimSet> ClaimSets { get; }
+        public abstract DateTime ExpirationTime { get; }
+        public abstract IDictionary<string, object> Properties { get; }
+
+        public static AuthorizationContext CreateDefaultAuthorizationContext(IList<IAuthorizationPolicy> authorizationPolicies)
+        {
+            return SecurityUtils.CreateDefaultAuthorizationContext(authorizationPolicies);
+        }
+    }
+}