public virtual void addCandidateUserWithAuthenticatedTenant()
        {
            identityService.SetAuthentication("aUserId", null, new List <string>()
            {
                TENANT_ONE
            });
            taskService.AddCandidateUser(task.Id, "demo");

            // then
            Assert.That(taskService.CreateTaskQuery()    //.TaskCandidateUser("demo")
                        .Count(), Is.EqualTo(1L));
        }