@Override
            public void run() {
                try {
                    if (closeableHttpClient != null) {
                        closeableHttpClient.close();
                    }
                } catch (IOException e) {
                    LOGGER.warn("http client close closeableHttpClient error when shutdown jvm.", e);
                }
            }
@author <a href=mailto:zhiyuan.lzy@antfin.com>zhiyuan.lzy</a>
core-impl/client/src/main/java/com/alipay/sofa/rpc/client/http/RpcHttpClient.java