Pero toda esta funcionalidad de usar código asíncrono con `async` y `await` a menudo se resume como utilizar "coroutines". Es comparable a la funcionalidad clave principal de Go, las "Goroutines".

## Conclusión

Nas versões anteriores do NodeJS / Navegador JavaScript, você utilizaria "callbacks". O que leva ao "inferno do callback".

## Corrotinas

        assertEquals("\\Qtest\\E", parser.parseFilterPaths("test", false, true));
    }

    public void test_escape_advanced() {
        GsaConfigParser parser = new GsaConfigParser();

        assertEquals("", parser.escape("# comment"));
        assertEquals("^\\Qtest\\E$", parser.escape("^test$"));
        assertEquals("^\\Qtest\\E", parser.escape("^test"));
        assertEquals("\\Qtest\\E$", parser.escape("test$"));

 * @since 4.0.0
 */
@Immutable
@Experimental
public interface InvokerRequest {
    /**
     * The parser request this instance was created from.
     */
    @Nonnull
    ParserRequest parserRequest();

    /**
     * Flag representing parser processing result: if there were some fatal errors during
     * {@link Parser#parseInvocation(ParserRequest)} this method will return {@code true} and invoker should

    private static final ObjectParser<StoredLtrQueryBuilder, Void> PARSER;

    static {
        PARSER = new ObjectParser<>(NAME);
        PARSER.declareString(StoredLtrQueryBuilder::modelName, MODEL_NAME);
        PARSER.declareString(StoredLtrQueryBuilder::featureSetName, FEATURESET_NAME);
        PARSER.declareString(StoredLtrQueryBuilder::storeName, STORE_NAME);

     */
    public static void parse(final SAXParser parser, final InputSource inputSource, final DefaultHandler handler) {
        assertArgumentNotNull("parser", parser);
        assertArgumentNotNull("inputSource", inputSource);
        assertArgumentNotNull("handler", handler);

        try {
            parser.parse(inputSource, handler);
        } catch (final SAXException e) {

    }

    /**
     * Creates a new Lucene query parser with the current configuration.
     * The parser is configured with the default field, analyzer, wildcard settings,
     * and default operator.
     *
     * @return a configured Lucene query parser
     */
    protected org.apache.lucene.queryparser.classic.QueryParser createQueryParser() {
        final LuceneQueryParser parser = new LuceneQueryParser(defaultField, analyzer);

        }
    }

    /**
     * Gets the content of the response using the provided parser function.
     *
     * @param <T> the type of the parsed content.
     * @param parser the function to parse the content.
     * @return the parsed content.
     */
    public <T> T getContent(final Function<CurlResponse, T> parser) {
        return parser.apply(this);
    }

    /**
     * Gets the content of the response as a string.

   * </pre>
   *
   * @throws IllegalArgumentException if there is a loop in the causal chain
   */
  public static Throwable getRootCause(Throwable throwable) {
    // Keep a second pointer that slowly walks the causal chain. If the fast pointer ever catches
    // the slower pointer, then there's a loop.
    Throwable slowPointer = throwable;

            final SAXParser parser = factory.newSAXParser();
            parser.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, StringUtil.EMPTY);
            parser.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, StringUtil.EMPTY);
            parser.parse(is, this);
        } catch (final Exception e) {