public void Setup()
            {
                SourceEnumerable = new Mock <IEnumerable <ItemSource> >(MockBehavior.Strict);
                Behavior         = new SynchronizerCollectionBehavior <ItemVM, ItemSource>();

                SetupFixture(
                    Behavior,
                    CreateSourceCollectionAccessor(SourceEnumerable.Object)
                    );
            }
            public void Setup()
            {
                _sourceCollectionAccessor = new ValueAccessorStub <IEnumerable <ItemSource> >();
                Behavior = new SynchronizerCollectionBehavior <ItemVM, ItemSource>();

                SetupFixture(
                    Behavior,
                    _sourceCollectionAccessor
                    );
            }