public void NeedsUpdateRoleTest()
        {
            Assert.IsTrue(cache.NeedsUpdate("resouce:operation"));

            cache.AddRole("resouce:operation", "operator");

            Assert.IsFalse(cache.NeedsUpdate("resouce:operation"));
        }
        Task <bool> IIamProvider.NeedsUpdate(string policyName, IIamProviderCache cache)
        {
            var ret = cache.NeedsUpdate(policyName);

            return(Task.FromResult(ret));
        }