### Question:
CertificationImporter { abstract Certification load(); CertificationImporter();   }### Answer:
@Test void testImporters() { var service = this.engine.getService(CertificationService.class); service.loadImporters(); for (var certificationId : service.getImporters().keySet()) { var certification = service.load(certificationId); assertNotNull(certification); assertFalse(certification.getControls().isEmpty()); } }