function withProjectionTest()
 {
     $crit = new Criteria();
     $this->assertClass($crit->withProjection(Projections::property(Job::column('job_id'))), 'rdbms.Criteria');
     $this->assertFalse($crit->isProjection());
     $this->assertTrue($crit->withProjection(Projections::property(Job::column('job_id')))->isProjection());
 }