@Override
  public void paint(@NotNull Editor editor, @NotNull Graphics g, @NotNull Rectangle r) {
    if (myColor == null || ExperimentalUI.isNewUI()) return;

    g.setColor(myColor);
    g.fillRect(r.x, r.y, myThickness, r.height);
    g.fillRect(r.x + myThickness, r.y, myDepth, myThickness);
    g.fillRect(r.x + myThickness, r.y + r.height - myThickness, myDepth, myThickness);
  }
@Override
  public void paint(@NotNull Editor editor, @NotNull Graphics g, @NotNull Rectangle r)