@Bean
    @ConditionalOnMissingBean(ConsulDataChangedListener.class)
    public DataChangedListener consulDataChangedListener(final ConsulClient consulClient) {
        return new ConsulDataChangedListener(consulClient);
    }
Config event listener data changed listener.

@param consulClient the consul client
@return the data changed listener
shenyu-admin-listener/shenyu-admin-listener-consul/src/main/java/org/apache/shenyu/admin/config/ConsulSyncConfiguration.java