* copy.
   *
   * <p><b>Warning:</b> {@code keyPredicate} must be <i>consistent with equals</i>, as documented at
   * {@link Predicate#apply}. Do not provide a predicate such as {@code
   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals.
   *
   * @since 11.0
   */

		tops = tops[:0]
		var topSig xlMetaV2VersionHeader
		consistent := true // Are all signatures consistent (shortcut)
		for _, vers := range versions {
			if len(vers) == 0 {
				consistent = false
				continue
			}
			ver := vers[0]
			if len(tops) == 0 {
				consistent = true
				topSig = ver.header
			} else {
				consistent = consistent && ver.header == topSig
			}
			tops = append(tops, vers[0])

   * use the copy.
   *
   * <p><b>Warning:</b> {@code predicate} must be <i>consistent with equals</i>, as documented at
   * {@link Predicate#apply}. Do not provide a predicate such as {@code
   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals. (See {@link
   * Iterables#filter(Iterable, Class)} for related functionality.)
   *

  // consistent list, it must restart their list without the continue field. Otherwise, the client may
  // send another list request with the token received with the 410 error, the server will respond with
  // a list starting from the next key, but from the latest snapshot, which is inconsistent from the

   * across different segments.
   *
   * The page replacement algorithm's data structures are kept casually consistent with the map. The
   * ordering of writes to a segment is sequentially consistent. An update to the map and recording
   * of reads may not be immediately reflected on the algorithm's data structures. These structures

     ```

 *  Fix: Gracefully recover from a failure to rebuild the cache journal.
 *  Fix: Don't corrupt cache entries when a cache entry is evicted while it is
    being updated.
 *  Fix: Make logging more consistent throughout OkHttp.
 *  Fix: Log plaintext bodies only. This uses simple heuristics to differentiate
    text from other data.
 *  Fix: Recover from `REFUSED_STREAM` errors in HTTP/2. This should improve

 *         });
 * }</pre>
 *
 * <p>The returned cache implements all optional operations of the {@link LoadingCache} and {@link
 * Cache} interfaces. The {@code asMap} view (and its collection views) have <i>weakly consistent
 * iterators</i>. This means that they are safe for concurrent use, but if other threads modify the
 * cache after the iterator is created, it is undefined which of these changes, if any, are

   *
   * <p>Note: If the given iterator is already a {@code PeekingIterator}, it <i>might</i> be
   * returned to the caller, although this is neither guaranteed to occur nor required to be
   * consistent. For example, this method <i>might</i> choose to pass through recognized
   * implementations of {@code PeekingIterator} when the behavior of the implementation is known to
   * meet the contract guaranteed by this method.

     * type. So why even make that error possible by giving callers the choice?
     *
     * On the other hand, the current signature is consistent with the similar allAsList method. And
     * eventually this method may go away entirely in favor of an API like
     * whenAllComplete().collectSuccesses(). That API would have a signature more like the current
     * one.

  }

  /**
   * Returns the comparator that orders the keys, which is {@link Ordering#natural()} when the
   * natural ordering of the keys is used. Note that its behavior is not consistent with {@link
   * TreeMap#comparator()}, which returns {@code null} to indicate natural ordering.
   */
  @Override
  public Comparator<? super K> comparator() {
    return keySet().comparator();
  }