*/
  long putIfAbsent(K key, long newValue) {
    AtomicBoolean noValue = new AtomicBoolean(false);
    Long result =
        map.compute(
            key,
            (K k, @Nullable Long oldValue) -> {
              if (oldValue == null || oldValue == 0) {
                noValue.set(true);
                return newValue;
              } else {
                return oldValue;

SITEMAP: http://example.com/sitemap3.xml
Sitemap:    # empty sitemap (should be ignored)
Sitemap: not-a-valid-url

# Case 12: Malformed lines that should be completely ignored
This line is completely invalid
:NoKey
NoValue:
:::
   :

# Case 13: Numeric crawl-delay edge cases
User-agent: NumericBot
Crawl-delay: 0
Crawl-delay: 999999999
Crawl-delay: 1.23e10

# Case 14: Tab characters instead of spaces
User-agent:	TabBot

ling","cur","targets","l","closest","index","prevAll","add","addBack","parents","parentsUntil","nextAll","nextUntil","prevUntil","contentDocument","content","reverse","rnothtmlwhite","Identity","v","Thrower","ex","adoptValue","resolve","reject","noValue","method","promise","fail","then","Callbacks","object","_","flag","firing","memory","fired","locked","list","queue","firingIndex","fire","once","stopOnFalse","remove","disable","lock","fireWith","Deferred","func","tuples","state","always","deferr...