import static com.google.common.util.concurrent.Futures.immediateFuture;
import static java.util.Arrays.asList;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.cache.CacheLoader.InvalidCacheLoadException;
import com.google.common.cache.TestingCacheLoaders.CountingLoader;

```Python
old_dict = {
    "old key": "old value",
    "second old key": "second old value",
}
new_dict = {**old_dict, "new key": "new value"}
```

Here, `new_dict` will contain all the key-value pairs from `old_dict` plus the new key-value pair:

```Python
{
    "old key": "old value",
    "second old key": "second old value",
    "new key": "new value",
}
```

        assertTrue(it.hasNext(), "Iterator should have second element");
        assertSame(fe2, it.next(), "Second element must match first page");

        // Next page fetched via fetchMore()
        assertTrue(it.hasNext(), "Iterator should have third element after fetchMore");
        assertSame(fe3, it.next(), "Third element from second page");

          serialNumber = it[1] as BigInteger,
          signature = it[2] as AlgorithmIdentifier,
          issuer = (it[3] as Pair<*, *>).second as List<List<AttributeTypeAndValue>>,
          validity = it[4] as Validity,
          subject = (it[5] as Pair<*, *>).second as List<List<AttributeTypeAndValue>>,
          subjectPublicKeyInfo = it[6] as SubjectPublicKeyInfo,
          issuerUniqueID = it[7] as BitString?,

	for {
		if err := sm.load(ctx, newObjectLayerFn()); err == nil {
			<-ctx.Done()
			return
		}
		duration := max(time.Duration(r.Float64()*float64(time.Second*10)),
			// Make sure to sleep at least a second to avoid high CPU ticks.
			time.Second)
		time.Sleep(duration)
	}
}

// load resync metrics saved on disk into memory
func (sm *siteResyncMetrics) load(ctx context.Context, objAPI ObjectLayer) error {

 *   protected void visitWildcardType(WildcardType t) {
 *     throw new IllegalArgumentException("Cannot contain wildcard type.");
 *   }
 * }.visit(type);
 * }
 *
 * <p>One {@code Type} is visited at most once. The second time the same type is visited, it's
 * ignored by {@link #visit}. This avoids infinite recursion caused by recursive type bounds.
 *
 * <p>This class is not thread safe.
 *
 * @author Ben Yu
 */

Cela comprend, par exemple :

* Les notifications par email envoyées après l'exécution d'une action :
    * Étant donné que se connecter à un serveur et envoyer un email a tendance à être «lent» (plusieurs secondes), vous pouvez retourner la réponse directement et envoyer la notification en arrière-plan.
* Traiter des données :

            TestServerMessageBlock2 second = new TestServerMessageBlock2(mockConfig);
            TestServerMessageBlock2 third = new TestServerMessageBlock2(mockConfig);

            assertTrue(testMessage.chain(second));
            assertTrue(testMessage.chain(third));

            assertEquals(second, testMessage.getNext());
            assertEquals(third, second.getNext());
        }

        @Test

				)

				if orchestrated && hostResolveToLocalhost(endpoints[i]) {
					// time elapsed
					timeElapsed := time.Since(startTime)
					// log error only if more than a second has elapsed
					if timeElapsed > time.Second {
						reqInfo.AppendTags("elapsedTime",
							humanize.RelTime(startTime,
								startTime.Add(timeElapsed),
								"elapsed",
								"",
							))

        int result = smbComRename.writeBytesWireFormat(dst, dstIndex);

        // Then
        assertTrue(result > 0);
        assertEquals((byte) 0x04, dst[0]); // First buffer format byte

        // Find the second buffer format byte
        int secondBufferFormatIndex = oldFileName.length() + 2; // 1 for first 0x04, 1 for null terminator
        assertEquals((byte) 0x04, dst[secondBufferFormatIndex]);
    }

    /**