public async Task TestQueryJobs()
        {
            var jobName   = "foobar" + DateTime.Now.Ticks;
            var createdBy = "itok";
            var tags      = new[] { "red", "rootJob", "named" };
            await _client.CreateNewJobAsync(new AddJobDto(jobName)
            {
                CreatedBy = createdBy,
                Tags      = tags.ToList()
            });

            var indices = await _client.QueryJobIndexAsync(new QueryJobIndexDto
            {
                Start     = DateTimeOffset.Now.AddHours(-1),
                End       = DateTimeOffset.Now.AddHours(1),
                Predicate = $@"JobName=""{jobName}"" and CreatedBy=""{createdBy}"" and Tags.Contains(""red"")"
            });

            Assert.AreEqual(indices.IndexGrainHit > 0, true);
        }