@Override
  public void fillCompletionVariants(CompletionParameters parameters, CompletionResultSet result) {
    PsiFile file = parameters.getOriginalFile();
    final Consumer<Task> consumer = file.getUserData(KEY);

    if (CompletionService.getCompletionService().getAdvertisementText() == null) {
      final String shortcut = getActionShortcut(IdeActions.ACTION_QUICK_JAVADOC);
      if (shortcut != null) {
        CompletionService.getCompletionService()
            .setAdvertisementText(
                "Pressing " + shortcut + " would show task description and comments");
      }
    }

    if (consumer != null) {
      result.stopHere();

      String text = parameters.getOriginalFile().getText();
      int i = text.lastIndexOf(' ', parameters.getOffset() - 1) + 1;
      final String prefix = text.substring(i, parameters.getOffset());
      if (parameters.getInvocationCount() == 0
          && !file.getUserData(AUTO_POPUP_KEY)) { // is autopopup
        return;
      }
      result = result.withPrefixMatcher(new PlainPrefixMatcher(prefix));

      final TaskSearchSupport searchSupport = new TaskSearchSupport(file.getProject());
      List<Task> items = searchSupport.getItems(prefix, true);
      addCompletionElements(result, consumer, items, -10000);

      Future<List<Task>> future =
          ApplicationManager.getApplication()
              .executeOnPooledThread(
                  new Callable<List<Task>>() {
                    @Override
                    public List<Task> call() {
                      return searchSupport.getItems(prefix, false);
                    }
                  });

      while (true) {
        try {
          List<Task> tasks = future.get(100, TimeUnit.MILLISECONDS);
          if (tasks != null) {
            addCompletionElements(result, consumer, tasks, 0);
            return;
          }
        } catch (ProcessCanceledException e) {
          throw e;
        } catch (Exception ignore) {

        }
        ProgressManager.checkCanceled();
      }
    }
  }