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

Aquí, `new_dict` contendrá todos los pares clave-valor de `old_dict` más el nuevo par clave-valor:

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

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

Hier wird `new_dict` alle Schlüssel-Wert-Paare von `old_dict` plus das neue Schlüssel-Wert-Paar enthalten:

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

package cmd

import (
	"context"
	"time"
)

var sharedLockTimeout = newDynamicTimeoutWithOpts(dynamicTimeoutOpts{
	timeout:       30 * time.Second,
	minimum:       10 * time.Second,
	retryInterval: time.Minute,
})

type sharedLock struct {
	lockContext chan LockContext
}

func (ld sharedLock) backgroundRoutine(ctx context.Context, objAPI ObjectLayer, lockName string) {

        final CrawlingInfo info = new CrawlingInfo();
        info.setId("test-id");
        info.setSessionId("test-session");

        final String str = info.toString();
        assertNotNull(str);
    }

    @Test
    public void test_crawlingInfoParam_toString() {
        final CrawlingInfoParam param = new CrawlingInfoParam();
        param.setId("param-id");
        param.setKey("test-key");

  @CanIgnoreReturnValue
  public final <A extends Appendable> A appendTo(
      A appendable, @Nullable Object first, @Nullable Object second, @Nullable Object... rest)
      throws IOException {
    return appendTo(appendable, iterable(first, second, rest));
  }

  /**
   * Appends the string representation of each of {@code parts}, using the previously configured

      implements Serializable {
    final Converter<A, B> first;
    final Converter<B, C> second;

    ConverterComposition(Converter<A, B> first, Converter<B, C> second) {
      this.first = first;
      this.second = second;
    }

    /*
     * These gymnastics are a little confusing. Basically this class has neither legacy nor

        assertThrows(IllegalStateException.class, () -> {
            Handler.setURLStreamHandlerFactory(mockFactory2); // Second call, should fail.
        }, "Setting the factory a second time should throw IllegalStateException.");
    }

    @Test
    void testOpenConnection_WithCustomFactory() throws Exception {

        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]);
    }

    /**

    }

    @Test
    @DisplayName("Iterator with rejecting filter - finds next acceptable")
    void iteratorWithRejectingFilter() throws Exception {
        // Setup: first entry rejected, second accepted
        FileEntry entry1 = mock(FileEntry.class);
        FileEntry entry2 = mock(FileEntry.class);

        when(delegate.hasNext()).thenReturn(true, true, false);

        }
    }

    /**
     * Validates integer for safe arithmetic operations
     *
     * @param a first operand
     * @param b second operand
     * @param operation the operation name
     * @throws ArithmeticException if operation would overflow
     */
    public static void validateIntegerAddition(int a, int b, String operation) {