protected long getNamespaceOwnerId() {
protected String getNamespaceOwnerId() {
	protected long getNamespaceOwnerId() {		// Performance: this function is not called during warm Eclipse startup using cached 		// extension registry, but is called about 45 times per contribution during 		// the "clean" Eclipse start. Cache the result.		if (namespaceOwnerId == -1) 			namespaceOwnerId = registry.getNamespaceOwnerId(contributorId);		return namespaceOwnerId;	}