tracker.returnOrdinalToPool(30);
tracker.returnOrdinalToPool(40);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
tracker.serializeTo(baos);
FreeOrdinalTracker deserializedTracker = FreeOrdinalTracker.deserializeFrom(new ByteArrayInputStream(baos.toByteArray()));
Assert.assertEquals(40, deserializedTracker.getFreeOrdinal());
Assert.assertEquals(30, deserializedTracker.getFreeOrdinal());