@Nullable
    @Contract(value = "null -> null; !null -> !null", pure = true)
    public static ForkJoinWorkerThreadFactory unwrapDisableInheritableForkJoinWorkerThreadFactory(@Nullable ForkJoinWorkerThreadFactory threadFactory) {
        if (!isDisableInheritableForkJoinWorkerThreadFactory(threadFactory)) return threadFactory;

        return ((DisableInheritableForkJoinWorkerThreadFactoryWrapper) threadFactory).unwrap();
    }
Unwrap {@code DisableInheritableForkJoinWorkerThreadFactory} to the original/underneath one.

@see com.alibaba.ttl3.TtlWrappers#unwrap(Object)
@see TtlExecutors#unwrapDisableInheritableThreadFactory(ThreadFactory)
ttl-core/src/main/java/com/alibaba/ttl3/executor/TtlExecutors.java