public T refer() {
        if (consumerBootstrap == null) {
            consumerBootstrap = Bootstraps.from(this);
        }
        return consumerBootstrap.refer();
    }
Sets provider info listener.

@param providerInfoListener the provider info listener
@return the provider info listener
core/api/src/main/java/com/alipay/sofa/rpc/config/ConsumerConfig.java