@RequiresEdt
      public String compute() {
        if (!myLoadingStarted) {
          myLoadingStarted = true;
          ReadAction
            .nonBlocking(() -> new RangeDescription(computeDescription()))
            .finishOnUiThread(ModalityState.any(), result -> {
              myDescription = result;
              if (result.description != null) repaintEditor();
            })
            .withDocumentsCommitted(myProject)
            .wrapProgress(myDescriptionsIndicator)
            .submit(NonUrgentExecutor.getInstance());
        }
        return myDescription.description;
      }
@RequiresEdt
      public String compute()