| Maximum number of versions per object                                           | 10000 (can be configured to higher values but we do not recommend beyond 10000) |

    /** System property name to select HTTP client implementation. */
    public static final String HTTP_CLIENT_PROPERTY = "fess.crawler.http.client";

    /** Value for HC4 client selection. */
    public static final String HC4_CLIENT = "hc4";

    /** Value for HC5 client selection. */
    public static final String HC5_CLIENT = "hc5";

    /** The HC4 HTTP client instance. */
    protected CrawlerClient hc4Client;

     * @param id the document ID to update
     * @param field the field name to update
     * @param value the new value for the field
     * @return true if the update was successful, false otherwise
     */
    public boolean updateDocument(final SearchEngineClient searchEngineClient, final String id, final String field, final Object value) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

We can **update a hero**. For this we use an HTTP `PATCH` operation.

And in the code, we get a `dict` with all the data sent by the client, **only the data sent by the client**, excluding any values that would be there just for being the default values. To do it we use `exclude_unset=True`. This is the main trick. 🪄

Then we use `hero_db.sqlmodel_update(hero_data)` to update the `hero_db` with the data from `hero_data`.

---

Aber wenn Sie neugierig auf dieses spezielle Codebeispiel sind und immer noch Spaß haben, hier sind einige zusätzliche Details.

#### Zeichenkette mit `value.startswith()` { #string-with-value-startswith }

Haben Sie bemerkt? Eine Zeichenkette mit `value.startswith()` kann ein Tuple übernehmen, und es wird jeden Wert im Tuple überprüfen:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py ln[16:19] hl[17] *}

---

Mas se você estiver curioso sobre este exemplo de código específico e ainda entretido, aqui vão alguns detalhes extras.

#### String com `value.startswith()` { #string-with-value-startswith }

Percebeu? Uma string usando `value.startswith()` pode receber uma tupla, e verificará cada valor na tupla:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py ln[16:19] hl[17] *}

     * @param value The group or role name value.
     * @param useDomainServices Whether to use domain services for group resolution.
     */
    protected void addGroupOrRoleName(final List<String> list, final String value, final boolean useDomainServices) {
        list.add(value);
        if (useDomainServices && value.indexOf('@') >= 0) {
            final String[] values = value.split("@");

    }

    /**
     * Gets the fragment offset.
     *
     * @return the fragment offset value
     */
    public int getFragmentOffset() {
        return fragmentOffset;
    }

    /**
     * Sets the fragment offset with fluent interface.
     *
     * @param fragmentOffset the fragment offset value
     * @return this HighlightInfo instance for method chaining
     */

    return name == "valueOf" && parameters.size == 1 && parameters.first().type == "java.lang.String"
}


private
fun JApiMethod.isEnumImplicitMethodValues(): Boolean {
    return name == "values" && parameters.size == 0

    List<Class<? extends AbstractTester>> testers = getTesters();

    logger.fine(" Testing: " + name);

    // Split out all the specified sizes.
    Set<Feature<?>> sizesToTest = Helpers.copyToSet(CollectionSize.values());
    sizesToTest.retainAll(features);
    features.removeAll(sizesToTest);

    addImpliedFeatures(sizesToTest);
    sizesToTest.retainAll(asList(CollectionSize.ZERO, CollectionSize.ONE, CollectionSize.SEVERAL));