commons/rmf/bean/src/main/java/org/ldp4j/rdf/bean/impl/model/ModelUtils.java
private static boolean isCorrectColonNamespaceURISplit(String namespace, String localName, char lastNsChar) {
		return
			lastNsChar == COLON &&
			isValidColonLocalName(localName) &&
			isValidColonNamespace(namespace);
	}
private static boolean isCorrectColonNamespaceURISplit(String namespace, String localName, char lastNsChar) {
		return
			lastNsChar == COLON &&
			isValidColonLocalName(localName) &&
			isValidColonNamespace(namespace);
	}
correct split if local name has no ':' and URI contains no '#' or '/'