class VnfAdapterVfModuleObjectMapper {

    protected String createVnfcSubInterfaceKey(String vmTypeKey, int networkDataIdx, String networkRoleKey,
            int portIdx) {

        return Joiner.on(UNDERSCORE)
                .join(Arrays.asList(vmTypeKey, networkDataIdx, SUB_INT, networkRoleKey, PORT, portIdx));
    }

}