@Override
  public void unregisterInterest(Object key) {
    ServerRegionProxy proxy = getServerProxy();
    if (proxy != null) {
      // Keep support for "ALL_KEYS" in 4.2.x
      if (key instanceof String && key.equals("ALL_KEYS")) {
        proxy.unregisterInterest(".*", InterestType.REGULAR_EXPRESSION, false, false);
      } else if (key instanceof List) {
        proxy.unregisterInterestList((List) key, false, false);
      } else {
        proxy.unregisterInterest(key, InterestType.KEY, false, false);
      }
    } else {
      throw new UnsupportedOperationException(
          "Interest unregistration requires a pool.");
    }
  }
Bump this number any time an incompatible change is made to the snapshot format.
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java