private static Insets getOutsideFrameInsets() {
      Insets insets = getInsideFrameInsets();
      add(insets, getFrameInsets());

      //noinspection UseDPIAwareInsets
      return new Insets(JBUIScale.scale(TOP_INSET) - insets.top,
                        insets.left + 1, // RoundedLineBorder is a little clipped near edges, reserve additional space
                        JBUIScale.scale(BOTTOM_INSET) - insets.bottom, SEPARATOR_LEFT_INSET - insets.right);
    }
private static Insets getOutsideFrameInsets()