return true;
          }
        }
      }
      return false;
    }

    /**
     * Advances to the given entry. Returns true if the entry was valid, false if it should be
     * skipped.
     */
    boolean advanceTo(ReferenceEntry<K, V> entry) {
      try {
        long now = ticker.read();
        K key = entry.getKey();
        V value = getLiveValue(entry, now);

            return true;
          }
        }
      }
      return false;
    }

    /**
     * Advances to the given entry. Returns true if the entry was valid, false if it should be
     * skipped.
     */
    boolean advanceTo(ReferenceEntry<K, V> entry) {
      try {
        long now = ticker.read();
        K key = entry.getKey();
        V value = getLiveValue(entry, now);