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