public static boolean isTtlRunnableUnwrapComparator(@Nullable Comparator<Runnable> comparator) {
        return comparator instanceof TtlUnwrapComparator;
    }
check the {@code Comparator<Runnable>} is a wrapper {@code TtlRunnableUnwrapComparator} or not.

@see #getTtlRunnableUnwrapComparator(Comparator)
@see #getTtlRunnableUnwrapComparatorForComparableRunnable()
ttl-core/src/main/java/com/alibaba/ttl3/executor/TtlExecutors.java