public static void test12() {
   long i = 0;
   mc.storeCounter("foo", i);
   mc.incr("foo"); // foo now == 1
   mc.incr("foo", (long) 5); // foo now == 6
   long j = mc.decr("foo", (long) 2); // foo now == 4
   assert j == 4;
   assert j == mc.getCounter("foo");
 }
  public static void test18() {
    long i = 0;
    mc.addOrIncr("foo"); // foo now == 0
    mc.incr("foo"); // foo now == 1
    mc.incr("foo", (long) 5); // foo now == 6

    mc.addOrIncr("foo"); // foo now 7

    long j = mc.decr("foo", (long) 3); // foo now == 4
    assert j == 4;
    assert j == mc.getCounter("foo");
  }