@Override
    public void onAsyncResponse(ConsumerConfig config, SofaRequest request, SofaResponse response, Throwable throwable)
        throws SofaRpcException {
        response.setAppResponse(response.getAppResponse() + "_a0");
    }
@author <a href="mailto:zhanggeng.zg@antfin.com">GengZhang</a>
core/api/src/test/java/com/alipay/sofa/rpc/filter/TestChainFilter0.java