Jobs.schedule(() -> ModelJobs.schedule(() -> buildDocumentTree(),
    ModelJobs.newInput(ClientRunContexts.copyCurrent())),
  Jobs.newInput().withRunContext(ClientRunContexts.copyCurrent()));

// Load document data asynchronously (not in model thread)
Jobs.schedule(() -> {
  final byte[] document = BEANS.get(IDocumentService.class).loadDocument(documentId);

  // Update document field in model thread
  ModelJobs.schedule(() -> getDocumentField().setValue(document), 
    ModelJobs.newInput(ClientRunContexts.copyCurrent())
      .withName("Updating document field [document={}]", documentId));
} , Jobs.newInput()
      .withName("Loading document asynchronously [document={}]", documentId)
      .withRunContext(ClientRunContexts.copyCurrent()));

// Create a blocking condition to wait until the document is loaded
IBlockingCondition documentLoadedCondition = Jobs.newBlockingCondition(true);

// Load document data asynchronously (not in the model thread)
IFuture<byte[]> future = Jobs.schedule(() -> BEANS.get(IDocumentService.class).loadDocument(documentId),
    Jobs.newInput()
      .withName("Loading document asynchronously [document={}]", documentId)
      .withRunContext(ClientRunContexts.copyCurrent()))
      .whenDone((event) -> documentLoadedCondition.setBlocking(false), null);

// Wait until the document is loaded.
// By using a blocking condition, the model job's mutex is released for the time of loading the document,
// which allows other model jobs of this session to run. Also, the UI layer is instructed to transport data to the UI,
// meaning that this model job does not block the UI for the time of loading the document.
documentLoadedCondition.waitFor(ModelJobs.EXECUTION_HINT_UI_INTERACTION_REQUIRED);

// Update the document field with the document loaded.
// Please note, that the current model job acquired the mutex anew upon being signalled to continue.
getDocumentField().setValue(future.awaitDoneAndGet());