direction in which the March Hare was said to live.  `I've seen
hatters before,' she said to herself; `the March Hare will be
much the most interesting, and perhaps as this is May it won't be
raving mad--at least not so mad as it was in March.'  As she said
this, she looked up, and there was the Cat again, sitting on a
branch of a tree.

  `Did you say pig, or fig?' said the Cat.

            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();

direction in which the March Hare was said to live.  `I've seen
hatters before,' she said to herself; `the March Hare will be
much the most interesting, and perhaps as this is May it won't be
raving mad--at least not so mad as it was in March.'  As she said
this, she looked up, and there was the Cat again, sitting on a
branch of a tree.

  `Did you say pig, or fig?' said the Cat.