*
   * <p>If the character does not need to be escaped, this method should return {@code null}, rather
   * than an array containing the character representation of the code point. This enables the
   * escaping algorithm to perform more efficiently.
   *
   * <p>If the implementation of this method cannot correctly handle a particular code point then it
   * should either throw an appropriate runtime exception or return a suitable replacement

	if versions < 0 {
		return 0, buf, fmt.Errorf("decodeXLHeaders: Negative version count %d", versions)
	}
	return versions, buf, nil
}

// decodeVersions will decode a number of versions from a buffer
// and perform a callback for each version in order, newest first.
// Any non-nil error is returned.
func decodeVersions(buf []byte, versions int, fn func(idx int, hdr, meta []byte) error) (e error) {
	var tHdr, tMeta []byte // Zero copy bytes

   *
   * <p>If {@code expectedSize} is exactly the number of entries added to the builder before {@link
   * Builder#build} is called, the builder is likely to perform better than an unsized {@link
   * #builder()} would have.
   *
   * <p>It is not specified if any performance benefits apply if {@code expectedSize} is close to,

    /** Performs a GAS operation on {@link AbstractFutureState#waitersField}. */
    abstract @Nullable Waiter gasWaiters(AbstractFutureState<?> future, Waiter update);

    /** Performs a GAS operation on {@link AbstractFutureState#listenersField}. */
    abstract @Nullable Listener gasListeners(AbstractFutureState<?> future, Listener update);

    int required = allRequired[requiredChosen];

    // ...do the first selection...
    selectInPlace(required, array, from, to);

    // ...then recursively perform the selections in the range below...
    int requiredBelow = requiredChosen - 1;
    while (requiredBelow >= requiredFrom && allRequired[requiredBelow] == required) {

         * that chained message. Before doing so we must increment
         * the batchLevel of the andx message in case it itself is an
         * andx message and needs to perform the same check as above.
         */

        this.andx.batchLevel = this.batchLevel + 1;

        dst[start + ANDX_COMMAND_OFFSET] = this.andxCommand;
        dst[start + ANDX_RESERVED_OFFSET] = (byte) 0x00;

 * It uses various services and components, such as {@link UrlQueueService}, {@link DataService},
 * {@link CrawlerContainer}, {@link LogHelper}, {@link CrawlerClientFactory}, and {@link CrawlerContext},
 * to perform its tasks.
 * </p>
 *
 * <p>
 * The crawling process involves the following steps:
 * </p>
 * <ol>
 *   <li>Fetching a URL from the queue using {@link UrlQueueService#poll(String)}.</li>

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      Work and such Derivative Works in Source or Object form.

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