apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java/ApolloOpenApiClient/getNamespaceLock
class ApolloOpenApiClient:  public OpenNamespaceLockDTO getNamespaceLock(String appId, String env, String clusterName, String namespaceName) {
    return namespaceService.getNamespaceLock(appId, env, clusterName, namespaceName);
  }