private void addInlay(String suffix, int caretOffset) {
    Inlay inlay = myLookup.getTopLevelEditor().getInlayModel().addInlineElement(caretOffset, true, createGrayRenderer(suffix));
    if (inlay != null) {
      myInlays.add(inlay);
      Disposer.register(myLookup, inlay);
    }
  }
private void addInlay(String suffix, int caretOffset)