@Override
    protected Builder newBuilderForType(
                                        BuilderParent parent) {
        Builder builder = new Builder(parent);
        return builder;
    }
<code>.com.alipay.sofa.rpc.server.bolt.pb.Group group = 2;</code>
test/test-integration/src/test/java/com/alipay/sofa/rpc/server/bolt/pb/EchoRequest.java