@Test
public void testToBounds2D() {

	assertTrue(this.location11.toBounds2D().isEmpty());
	assertTrue(this.location12.toBounds2D().isEmpty());
	assertTrue(this.location13.toBounds2D().isEmpty());
	assertTrue(this.location21.toBounds2D().isEmpty());
	assertTrue(this.location22.toBounds2D().isEmpty());
	assertTrue(this.location23.toBounds2D().isEmpty());
}