public RefererConfig<CommonClient> initRef(final MetaData metaData) {
        try {
            RefererConfig<CommonClient> referenceConfig = cache.get(metaData.getPath());
            if (StringUtils.isNoneBlank(referenceConfig.getServiceInterface())) {
                return referenceConfig;
            }
        } catch (ExecutionException e) {
            LOG.error("init motan ref ex:{}", e.getMessage());
        }
        return build(metaData);

    }
Init ref reference config.

@param metaData the meta data
@return the reference config
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-motan/src/main/java/org/apache/shenyu/plugin/motan/cache/ApplicationConfigCache.java