return null;
      }
      if (!isExpired(value)) {
        statsCounter.recordHits(1);
        value.updateTimestamp();
        return value.getValue();
      }

      statsCounter.recordEviction();
      statsCounter.recordMisses(1);
      cachingHashMap.remove(key);
    }
    // `key` was in the cache, so it's a K.
    // (Or it's a weird case like a LinkedList in a Cache<ArrayList, ...>, but *shrug*.)