docs: static OcAgentMetricsServiceExportRpcHandler create(MetricsServiceStub stub) {
      OcAgentMetricsServiceExportRpcHandler exportRpcHandler =
          new OcAgentMetricsServiceExportRpcHandler();
      ExportResponseObserver exportResponseObserver = new ExportResponseObserver(exportRpcHandler);
      try {
        StreamObserver<ExportMetricsServiceRequest> exportRequestObserver =
            stub.export(exportResponseObserver);
        exportRpcHandler.setExportRequestObserver(exportRequestObserver);
      } catch (StatusRuntimeException e) {
        exportRpcHandler.onComplete(e);
      }
      return exportRpcHandler;
    }