apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java/ApolloOpenApiClient/getEnvClusterInfo
class ApolloOpenApiClient:  public List<OpenEnvClusterDTO> getEnvClusterInfo(String appId) {
    return appService.getEnvClusterInfo(appId);
  }