apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/component/config/PortalConfig.java/PortalConfig/portalSupportedEnvs
class PortalConfig:  public List<Env> portalSupportedEnvs() {
    String[] configurations = getArrayProperty("apollo.portal.envs", new String[]{"FAT", "UAT", "PRO"});
    List<Env> envs = Lists.newLinkedList();

    for (String env : configurations) {
      envs.add(Env.addEnvironment(env));
    }

    return envs;
  }