new Object[] {config.getDeclaringExtension().getNamespace()});
new Object[] {config.getDeclaringExtension().getNamespaceIdentifier()});
	private void addStrategy(IConfigurationElement config) {		String nsUri = config.getAttribute(A_NAMESPACE_URI);		String className = config.getAttribute(A_CLASS);				if (nsUri == null) {			Log.warningMessage(				EMFModelValidationStatusCodes.TRAVERSAL_NO_NAMESPACE_URI,				EMFModelValidationStatusCodes.TRAVERSAL_NO_NAMESPACE_URI_MSG,				new Object[] {config.getDeclaringExtension().getNamespace()});		} else if (className == null) {			Log.warningMessage(				EMFModelValidationStatusCodes.TRAVERSAL_NO_CLASS,				EMFModelValidationStatusCodes.TRAVERSAL_NO_CLASS_MSG,				new Object[] {nsUri});		} else {			Descriptor descriptor = getDescriptor(nsUri);						descriptor.addTraversalStrategy(config);		}	}