Method swap

tests/java/PathTest.java:265–272

()

    }

    public void swap() {
        try (Path p1 = new Path().lineTo(40, 40).lineTo(40, 0).lineTo(0, 40).lineTo(0, 0).closePath();
             Path p2 = new Path().lineTo(0, 0).lineTo(20, 20);) {
            p1.swap(p2);
            assertEquals(new Path().lineTo(0, 0).lineTo(20, 20), p1);
            assertEquals(new Path().lineTo(40, 40).lineTo(40, 0).lineTo(0, 40).lineTo(0, 0).closePath(), p2);
        }
    }

    public void contains() {
        try (Path p = new Path().addRRect(RRect.makeLTRB(10, 20, 54, 120, 10, 20))) {