Method getLiveEntry

output/java_guava/1.4.18/LocalCache.java:2815–2825

(Object key, int hash, long now)

    }

    @Nullable
    ReferenceEntry<K, V> getLiveEntry(Object key, int hash, long now) {
      ReferenceEntry<K, V> e = getEntry(key, hash);
      if (e == null) {
        return null;
      } else if (map.isExpired(e, now)) {
        tryExpireEntries(now);
        return null;
      }
      return e;
    }

    /**
     * Gets the value from an entry. Returns null if the entry is invalid, partially-collected,