protected void updateSignature() {
    if (mySignatureArea == null || myPropagateParamChangesButton == null) return;

    final Runnable updateRunnable = () -> {
      if (myUpdateSignatureAlarm.isDisposed()) return;
      myUpdateSignatureAlarm.cancelAllRequests();
      myUpdateSignatureAlarm.addRequest(() -> {
        if (myProject.isDisposed()) return;
        PsiDocumentManager.getInstance(myProject).performLaterWhenAllCommitted(() -> updateSignatureAlarmFired());
      }, 100, ModalityState.stateForComponent(mySignatureArea));
    };
    SwingUtilities.invokeLater(updateRunnable);
  }
protected void updateSignature()