extraOutput.writeLong(((ExtensionPoint) xpt.getObject()).getNamespaceOwnerId());
writeStringOrNull(((ExtensionPoint) xpt.getObject()).getNamespaceOwnerId(), extraOutput);
	private void saveExtensionPointData(ExtensionPointHandle xpt) throws IOException {		writeStringOrNull(xpt.getLabel(), extraOutput);		writeStringOrNull(xpt.getSchemaReference(), extraOutput);		writeStringOrNull(xpt.getUniqueIdentifier(), extraOutput);		writeStringOrNull(xpt.getNamespace(), extraOutput);		extraOutput.writeLong(((ExtensionPoint) xpt.getObject()).getNamespaceOwnerId());	}