* Add support for type annotations using `Optional` as in `param: Optional[str] = None`. New documentation: [Optional type declarations](https://fastapi.tiangolo.com/tutorial/query-params/#optional-type-declarations).
    * PR [#278](https://github.com/tiangolo/fastapi/pull/278).

## 0.26.0

   *
   * <p>The views returned by the {@code Table} methods {@link Table#column}, {@link
   * Table#columnKeySet}, and {@link Table#columnMap} have iterators that don't support {@code
   * remove()}. Otherwise, all optional operations are supported. Null row keys, columns keys, and
   * values are not supported.
   *
   * <p>Lookups by row key are often faster than lookups by column key, because the data is stored

    assertThat(cookie.matches("http://www.example.com".toHttpUrl())).isFalse()
    assertThat(cookie.matches("http://square.com".toHttpUrl())).isFalse()
  }

  /** Ignore an optional leading `.` in the domain.  */
  @Test fun domainMatchesIgnoresLeadingDot() {
    val cookie = parse(url, "a=b; domain=.example.com")
    assertThat(cookie!!.matches("http://example.com".toHttpUrl())).isTrue()

The `HeroUpdate` *data model* is somewhat special, it has **all the same fields** that would be needed to create a new hero, but all the fields are **optional** (they all have a default value). This way, when you update a hero, you can send just the fields that you want to update.

Das `HeroUpdate`-*Datenmodell* ist etwas Besonderes, es hat **die selben Felder**, die benötigt werden, um einen neuen Helden zu erstellen, aber alle Felder sind **optional** (sie haben alle einen Defaultwert). Auf diese Weise, wenn Sie einen Helden aktualisieren, können Sie nur die Felder senden, die Sie aktualisieren möchten.

/// tip

The docs UI will interact with the server that you select.

///

/// note | Technical Details

The `servers` property in the OpenAPI specification is optional.

        assertTrue(bulkLine.contains("reading2a"));
        assertTrue(bulkLine.contains("reading3"));
    }

    @Test
    public void testCreateBulkLineWithEmptyArrays() {
        // Test with empty arrays for optional fields
        SuggestItem item = new SuggestItem(new String[] { "text" }, new String[0][0], new String[0], 0, 0, 1.0f, new String[0],
                new String[0], new String[0], SuggestItem.Kind.DOCUMENT);

 * multimap is modified while an iteration over any of those collections is in progress, except
 * through the iterator's methods, the results of the iteration are undefined.
 *
 * <p>Keys and values may be null. All optional multimap methods are supported, and all returned
 * views are modifiable.
 *
 * <p>This class is not threadsafe when any concurrent operations update the multimap. Concurrent

/// tip | Tipp

Die Dokumentationsoberfläche interagiert mit dem von Ihnen ausgewählten Server.

///

/// note | Technische Details

Die Eigenschaft `servers` in der OpenAPI-Spezifikation ist optional.

import org.codelibs.fess.sso.SsoResponseType;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.DocumentUtil;
import org.codelibs.opensearch.runner.net.OpenSearchCurl;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;