r.add(new Field("c", "cccc"));
r.add(new Field("d", "ddd"));
// Perform copy
cut.apply(r, new VariableSpace());
Assert.assertEquals("aaaaaa", r.get("a").getValue());
Assert.assertEquals("bbbbb", r.get("b").getValue());
Assert.assertEquals("cccc", r.get("c").getValue());
Assert.assertEquals("ddd", r.get("d").getValue());