private static boolean isRemovalToken(final @Nullable Object value) {
    return value == Token.REMOVED_PHASE1 || value == Token.REMOVED_PHASE2
        || value == Token.DESTROYED || value == Token.TOMBSTONE;
  }
Copied from Get70.getValueAndIsObject(), except a minor change. (Make the method static instead
of copying it here?)
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/BaseCommand.java