## `Union` veya `Optional` Kullanımı { #using-union-or-optional }

Kodunuz herhangi bir nedenle `|` kullanamıyorsa — örneğin bir tip açıklamasında (type annotation) değil de `response_model=` gibi bir yerdeyse — dikey çizgi (`|`) yerine `typing` içindeki `Union`'ı kullanabilirsiniz.

Örneğin, bir şeyin `str` ya da `None` olabileceğini şöyle belirtebilirsiniz:

```python
from typing import Union

        Map<String, Object> parentMap = new LinkedHashMap<>();
        DocMap docMap = new DocMap(parentMap);

        docMap.put("c_key", "value_c");
        docMap.put("a_key", "value_a");
        docMap.put("lang", "en");
        docMap.put("b_key", "value_b");

        Set<Map.Entry<String, Object>> entrySet = docMap.entrySet();

 * This API does not try to cover all the requirements out there, just the basic ones, and is intentionally simple.
 * If plugin or extension needs anything more complex feature wise (i.e. HTTP range support or alike) it should
 * probably roll its own.
 * <p>
 * This implementation is backed by Maven Resolver API, supported protocols and transport selection depends on it. If

     * consumer project.
     * <p>
     * Note: This property is about "build path", whatever it means in the scope of the consumer project. It is NOT
     * about Java classpath or anything alike. How artifact is being consumed depends heavily on the consumer project.
     * Resolver is and will remain agnostic of consumer project use cases.
     */

public class EncryptInvoker extends LookupInvoker<EncryptContext> {

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public EncryptInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }

public class UpgradeInvoker extends LookupInvoker<UpgradeContext> {

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public UpgradeInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }

//   - fivs.Versions has all the non-free versions
//   - fivs.FreeVersions has all the free versions
//
// if inclFreeVersions is true all the versions are in fivs.Versions, free and non-free versions alike.
//
// Note: Only the scanner requires fivs.Versions to have exclusively non-free versions. This is used while enforcing NewerNoncurrentVersions lifecycle element.

Bunu bir **type annotation** içine koymak yerine bir **argümana değer** olarak geçtiğimiz için, Python 3.10'da bile `Union` kullanmamız gerekiyor.

Eğer bu bir type annotation içinde olsaydı, dikey çizgiyi kullanabilirdik:

```Python
some_variable: PlaneItem | CarItem
```

Bazı metin
///

/// warning | Uyarı
Bazı metin
///

/// danger | Tehlike
Bazı metin
///

////

//// tab | Bilgi

Sekmelerin ve `Info`/`Note`/`Warning`/vb. blokların başlığı, dikey çizgiden (`|`) sonra çeviri olarak eklenmelidir.

`scripts/translate.py` içindeki genel prompt'ta `### Special blocks` ve `### Tab blocks` bölümlerine bakın.

////

import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for FarmHashFingerprint64.
 *
 * @author Kyle Maddison
 * @author Geoff Pike
 */
@NullUnmarked
public class FarmHashFingerprint64Test extends TestCase {

  private static final HashFunction HASH_FN = farmHashFingerprint64();

  // If this test fails, all bets are off