Difference WillReturn and WillReturnCollectionValuesOf

            Isolate.WhenCalled(() => fakeResourceManager.Enumerate<SetResource>(fakeCriteria)).WillReturn(new Collection<SetResource>());

List<SetResource> fakeCollection = new List<SetResource>();
            Isolate.WhenCalled(() => fakeResourceManager.Enumerate<SetResource>(fakeCriteria)).WillReturnCollectionValuesOf(fakeCollection);

    [TestMethod()]
        public void AAACheckProvisioningAdministratorTest1()
        {
            Criteria fakeCriteria = Isolate.Fake.Instance<Criteria>();
            ResourceEnumerateClientManager fakeResourceManager = Isolate.Fake.Instance<ResourceEnumerateClientManager>();
            Isolate.Swap.NextInstance<ResourceEnumerateClientManager>().With(fakeResourceManager);
            Isolate.Swap.NextInstance<Criteria>().With(fakeCriteria);
            
            List<SetResource> fakeCollection = new List<SetResource>();            

            Isolate.WhenCalled(() => fakeResourceManager.Enumerate<SetResource>(fakeCriteria)).WillReturn(new Collection<SetResource>());
            //List<SetResource> fakeCollection = new List<SetResource>();
            //Isolate.WhenCalled(() => fakeResourceManager.Enumerate<SetResource>(fakeCriteria)).WillReturnCollectionValuesOf(fakeCollection);

            SecurityManager target = new SecurityManager();
            PersonResource person = new PersonResource();
            

            bool expected = false; 
            bool actual = target.CheckProvisioningAdministrator(person);

            Assert.AreEqual(expected, actual);
        }