### Question:
OntologyHelperBuilder { public OntologyHelper build() throws OntologyHelperException { validateParameters(); OntologyHelper helper; OntologyHelperConfiguration configuration; if (StringUtils.isNotBlank(ontologyUri)) { try { configuration = new OWLOntologyConfiguration(ontologyUri, arrayToList(labelPropertyUris, OWLOntologyConfiguration.LABEL_PROPERTY_URI), arrayToList(synonymPropertyUris, OWLOntologyConfiguration.SYNONYM_PROPERTY_URI), arrayToList(definitionPropertyUris, OWLOntologyConfiguration.DEFINITION_PROPERTY_URI), arrayToList(ignorePropertyUris)); helper = new OWLOntologyHelper((OWLOntologyConfiguration) configuration); } catch (URISyntaxException e) { LOGGER.error("Invalid ontology URI {}: {}", ontologyUri, e.getMessage()); throw new OntologyHelperException(e); } } else if (StringUtils.isNotBlank(olsBaseUrl)) { configuration = new OLSOntologyConfiguration(olsBaseUrl, ontology, pageSize); OLSHttpClient httpClient = new OLSHttpClient(threadpoolSize, threadFactory); if (StringUtils.isNotBlank(ontology)) { helper = new OLSOntologyHelper((OLSOntologyConfiguration) configuration, httpClient); } else { helper = new OLSTermsOntologyHelper((OLSOntologyConfiguration) configuration, httpClient); } } else { throw new OntologyHelperException("Could not create OntologyHelper - not enough configuration"); } configuration.setNodeLabelSeparator(nodeLabelSeparator); configuration.setNodePathSeparator(nodePathSeparator); return helper; }  OntologyHelperBuilder nodePathSeparator(String separator); OntologyHelperBuilder nodeLabelSeparator(String separator); OntologyHelperBuilder ontologyUri(String uri); OntologyHelperBuilder labelPropertyUris(String[] uris); OntologyHelperBuilder synonymPropertyUris(String[] uris); OntologyHelperBuilder definitionPropertyUris(String[] uris); OntologyHelperBuilder ignorePropertyUris(String[] uris); OntologyHelperBuilder olsBaseUrl(String url); OntologyHelperBuilder ontology(String ontology); OntologyHelperBuilder pageSize(int pageSize); OntologyHelperBuilder threadpoolSize(int tpSize); OntologyHelperBuilder threadFactory(ThreadFactory tf); OntologyHelper build();  }### Answer:
@Test(expected = uk.co.flax.biosolr.ontology.core.OntologyHelperException.class) public void build_noProperties() throws Exception { new OntologyHelperBuilder().build(); }