class ConfListServiceImpl extends SonicServiceImpl<ConfListMapper, ConfList> implements ConfListService {


    @Override
    public ConfList searchByKey(String key) {
        return lambdaQuery().eq(ConfList::getConfKey, key).last("limit 1").one();
    }

    @Override
    public void save(String key, String content, String extra) {<FILL_FUNCTION_BODY>}
}

        ConfList conf = searchByKey(key);

        if (conf == null) {
            conf = new ConfList();
        }
        conf.setContent(content)
                .setConfKey(key)
                .setExtra(extra);
        saveOrUpdate(conf);
    
<methods>public non-sealed void <init>() ,public boolean save(org.cloud.sonic.controller.models.domain.ConfList) <variables>