Assert.assertEquals(ss, s1);
ss = s1.subSequence(1, 4);
Assert.assertEquals(ss, new SimpleString("bcd"));
ss = s1.subSequence(5, 10);
Assert.assertEquals(ss, new SimpleString("fghij"));
ss = s1.subSequence(5, 12);
Assert.assertEquals(ss, new SimpleString("fghijkl"));