public async Task Basic()
{
var service = TestService.Create(TestService.UnrestrictedOptions, new[] { typeof(Qbservable2) }, Observable.Range(0, 5));
var results = await service.QueryAsync(xs => xs.WhereEven(x => x));
QactiveAssert.AreEqual(results, OnNext(0), OnNext(2), OnNext(4), OnCompleted <int>());
}