*
   * @param defaultPort a port number, from [0..65535]
   * @return a HostAndPort instance, guaranteed to have a defined port.
   */
  public HostAndPort withDefaultPort(int defaultPort) {
    checkArgument(isValidPort(defaultPort));
    if (hasPort()) {
      return this;
    }
    return new HostAndPort(host, defaultPort, hasBracketlessColons);
  }

  /**

      return;
    }
    assertNotNull(expectHost);

    // Apply withDefaultPort(), yielding hp2.
    final boolean badDefaultPort = (defaultPort < 0 || defaultPort > 65535);
    HostAndPort hp2 = null;
    try {
      hp2 = hp.withDefaultPort(defaultPort);
      assertFalse(badDefaultPort);
    } catch (IllegalArgumentException e) {
      assertTrue(badDefaultPort);
    }

 */
package okhttp3

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import okhttp3.HttpUrl.Companion.defaultPort
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
import okio.buffer
import okio.source
import org.junit.jupiter.params.ParameterizedTest

      return;
    }
    assertNotNull(expectHost);

    // Apply withDefaultPort(), yielding hp2.
    final boolean badDefaultPort = (defaultPort < 0 || defaultPort > 65535);
    HostAndPort hp2 = null;
    try {
      hp2 = hp.withDefaultPort(defaultPort);
      assertFalse(badDefaultPort);
    } catch (IllegalArgumentException e) {
      assertTrue(badDefaultPort);
    }

import kotlin.text.Charsets.UTF_32LE
import kotlin.text.Charsets.UTF_8
import kotlin.time.Duration
import okhttp3.EventListener
import okhttp3.Headers
import okhttp3.HttpUrl
import okhttp3.HttpUrl.Companion.defaultPort
import okhttp3.OkHttpClient
import okhttp3.RequestBody
import okhttp3.Response
import okhttp3.ResponseBody
import okhttp3.internal.http2.Header
import okio.Buffer
import okio.BufferedSource
import okio.Source

    val getFromUrl: HttpUrl? = URL("").toHttpUrlOrNull()
    val getFromUri: HttpUrl? = URI("").toHttpUrlOrNull()
    val parse: HttpUrl? = "".toHttpUrlOrNull()
    val defaultPort: Int = HttpUrl.defaultPort("")
  }

  @Test
  fun httpUrlBuilder() {
    var builder: HttpUrl.Builder = HttpUrl.Builder()
    builder = builder.scheme("")
    builder = builder.username("")

    result.encodedUsername = encodedUsername
    result.encodedPassword = encodedPassword
    result.host = host
    // If we're set to a default port, unset it in case of a scheme change.
    result.port = if (port != defaultPort(scheme)) port else -1
    result.encodedPathSegments.clear()
    result.encodedPathSegments.addAll(encodedPathSegments)
    result.encodedQuery(encodedQuery)
    result.encodedFragment = encodedFragment

	public static final fun defaultPort (Ljava/lang/String;)I
	public final fun encodedFragment ()Ljava/lang/String;
	public final fun encodedPassword ()Ljava/lang/String;
	public final fun encodedPath ()Ljava/lang/String;

    ```

Da wir in diesem Fall (ohne die Verwendung von `Annotated`) den Parameter-Defaultwert `None` mit `Query()` ersetzen, müssen wir nun dessen Defaultwert mit dem Parameter `Query(default=None)` deklarieren. Das dient demselben Zweck, `None` als Defaultwert für den Funktionsparameter zu setzen (zumindest für FastAPI).

Sprich:

```Python
q: Union[str, None] = Query(default=None)
```

HSPLokhttp3/HttpUrl$Companion;->canonicalize$okhttp$default(Lokhttp3/HttpUrl$Companion;Ljava/lang/String;IILjava/lang/String;ZZZZLjava/nio/charset/Charset;I)Ljava/lang/String;
HSPLokhttp3/HttpUrl$Companion;->defaultPort(Ljava/lang/String;)I
HSPLokhttp3/HttpUrl$Companion;->percentDecode$okhttp$default(Lokhttp3/HttpUrl$Companion;Ljava/lang/String;IIZI)Ljava/lang/String;
HSPLokhttp3/HttpUrl;-><clinit>()V