apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/eureka/ApolloEurekaClientConfig.java/ApolloEurekaClientConfig/getEurekaServerServiceUrls
class ApolloEurekaClientConfig:  public List<String> getEurekaServerServiceUrls(String myZone) {
    List<String> urls = bizConfig.eurekaServiceUrls();
    return CollectionUtils.isEmpty(urls) ? super.getEurekaServerServiceUrls(myZone) : urls;
  }