dict (String id required) {
    return dict json
}
dictList (int pageNum default 0, int pageSize default 20) {
    return dict list json
}
addDict (key-value pairs) {
    return true or false
}
updateDict (String id required, String action optional, String[] keys optional) {
    if (actions === 'unset') {
        删除指定id的dict的指定key
        return true or false
    } else {
        覆盖指定id的dict的指定key的对应value
        return true or false
    }
}
deleteDict (String id required) {
    return true or false
}