docs: public String createNamespace(String name) {
          String requestId = Long.toString(System.nanoTime());
  
          CreatePublicDnsNamespaceRequest publicDnsNamespaceRequest =
                  new CreatePublicDnsNamespaceRequest().withCreatorRequestId(requestId)
                          .withName(name)
                          .withDescription("test");
          CreatePublicDnsNamespaceResult clientResult = getDiscoveryClient().createPublicDnsNamespace(publicDnsNamespaceRequest);
          String operationId = clientResult.getOperationId();
          GetOperationResult opResult = checkOperation(operationId);
          return opResult.getOperation().getTargets().get("NAMESPACE");
      }