while (iter.hasNext()) {
            Artifact artifact = (Artifact) iter.next();
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()
                    + " Optional=" + (artifact.isOptional() ? "true" : "false"));
            assertTrue(
                    artifact.getVersion().equals("1.0"), "Incorrect version for " + artifact.getDependencyConflictId());
        }
    }

    * Ha nem akkor látni fogunk egy tiszta hibát ezzel kapcsolatban.
* ellenőrzi hogyha van egy opcionális query paraméter `q` névvel (azaz `http://127.0.0.1:8000/items/foo?q=somequery`) `GET` kérések esetén.
    * Mivel a `q` paraméter `= None`-al van deklarálva, ezért opcionális.
    * `None` nélkül ez a mező kötelező lenne (mint például a body `PUT` kérések esetén).

    // You could also apply it higher up the Logger hierarchy than this
    ExampleClassUnderTest.logger.addHandler(handler);

    ExampleClassUnderTest.logger.setUseParentHandlers(false); // optional

    stack.addTearDown(
        new TearDown() {
          @Override
          public void tearDown() throws Exception {
            ExampleClassUnderTest.logger.setUseParentHandlers(true);

import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;

/**
 * An LDAP user.
 */
public class LdapUser implements FessUser {

    private static final long serialVersionUID = 1L;

    /** The environment for LDAP connection. */

## `dependencies` zum *Pfadoperation-Dekorator* hinzufügen

Der *Pfadoperation-Dekorator* erhält ein optionales Argument `dependencies`.

Es sollte eine `list`e von `Depends()` sein:

{* ../../docs_src/dependencies/tutorial006_an_py39.py hl[19] *}

      }
      val code =
        statusLine.substring(codeStart, codeStart + 3).toIntOrNull()
          ?: throw ProtocolException(
            "Unexpected status line: $statusLine",
          )

      // Parse an optional response message like "OK" or "Not Modified". If it
      // exists, it is separated from the response code by a space.
      var message = ""
      if (statusLine.length > codeStart + 3) {

  public static final Charset UTF_16LE = StandardCharsets.UTF_16LE;

  /**
   * UTF-16: sixteen-bit UCS Transformation Format, byte order identified by an optional byte-order
   * mark.
   *
   * @deprecated Use {@link StandardCharsets#UTF_16} instead.
   */
  @Deprecated @J2ktIncompatible @GwtIncompatible // Charset not supported by GWT

 *
 * While [onReset] may occur at any time, the following callbacks are expected in order,
 * correlated by stream ID.
 *
 *  * [onRequest]
 *  * [onHeaders] (unless canceled)
 *  * [onData] (optional sequence of data frames)
 *
 * As a stream ID is scoped to a single HTTP/2 connection, implementations which target multiple
 * connections should expect repetition of stream IDs.
 *

import org.codelibs.fess.opensearch.config.exentity.JobLog;
import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.job.JobManager;
import org.lastaflute.job.LaCron;
import org.lastaflute.job.LaJobRuntime;
import org.lastaflute.job.LaScheduledJob;
import org.lastaflute.job.key.LaJobUnique;

O `Union` em `Union[str, None]` não é usado pelo FastAPI, mas permitirá que seu editor lhe dê um melhor suporte e detecte erros.

///

## Validação adicional

Nós iremos forçar que mesmo o parâmetro `q` seja opcional, sempre que informado, **seu tamanho não exceda 50 caracteres**.

### Importe `Query`

Para isso, primeiro importe `Query` de `fastapi`:

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[3] *}