public void setAppName(final String appName) {
        this.appName = appName;
    }
Sets app name.

@param appName the app name
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-grpc/src/main/java/org/apache/shenyu/plugin/grpc/resolver/ShenyuServiceInstanceLists.java