Assert.assertEquals(a5, m1.elementAt(3));
m1.sort();
System.out.println("sorted: " + m1);
Assert.assertEquals(4, m1.size());
Address addr0=m1.elementAt(0);
Address addr1=m1.elementAt(1);
Address addr2=m1.elementAt(2);
Address addr3=m1.elementAt(3);
System.out.println("sorted membership:\n" + printUUIDs(m1));
assert addr0.compareTo(addr1) < 0;
assert addr1.compareTo(addr2) < 0;
assert addr2.compareTo(addr3) < 0;