void (@NotNull Graphics2D g, int x1, int y1, int x2, int y2, final @Nullable Color bgColor, final Color fgColor) { if (x1 == x2) { drawVDottedLine(g, x1, y1, y2, bgColor, fgColor); } else if (y1 == y2) { drawHDottedLine(g, x1, x2, y1, bgColor, fgColor); } else { throw new IllegalArgumentException("Only vertical or horizontal lines are supported"); } }