assertNull(null, i.next(false));
assertNull(null, i.prevVariant(false));
//assertNotSame(p.getNext(), null);
i.nextVariant(true);
move = (SGFPointProperty) i.current().getProperty(SGFPropertyName.B);
assertEquals(new SGFPointProperty(SGFPropertyName.B, new SGFPoint(4, 6)), move);
assertFalse(i.current().hasProperty(SGFPropertyName.W));
//assertSame(p.getParent(), tree);
//assertSame(p.next(), null);
assertNull(i.nextVariant(false));