private void paintFoldingTree(@NotNull Graphics g, @NotNull Rectangle clip, int firstVisibleOffset, int lastVisibleOffset) {
    if (myEditor.isStickyLinePainting()) {
      // suppress folding icons on the sticky lines panel
      return;
    }
    if (isFoldingOutlineShown()) {
      doPaintFoldingTree((Graphics2D)g, clip, firstVisibleOffset, lastVisibleOffset);
    }
  }
private void paintFoldingTree(@NotNull Graphics g, @NotNull Rectangle clip, int firstVisibleOffset, int lastVisibleOffset)