```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",
}
```

 * efficient `max-age=0` directive instead:
 *
 * ```java
 * Request request = new Request.Builder()
 *     .cacheControl(new CacheControl.Builder()
 *         .maxAge(0, TimeUnit.SECONDS)
 *         .build())
 *     .url("http://publicobject.com/helloworld.txt")
 *     .build();
 * ```
 *
 * ## Force a Cache Response
 *

    private final CIFSContext context;
    private final ScheduledExecutorService cleanupExecutor;
    private static final long DEFAULT_LEASE_CLEANUP_INTERVAL = 60000; // 60 seconds
    private static final int DEFAULT_LEASE_BREAK_TIMEOUT = 60; // 60 seconds per MS-SMB2

    /**
     * Create a new lease manager
     *
     * @param context CIFS context
     */
    public LeaseManager(CIFSContext context) {

        assertEquals("foo/", r1.getName(), "First child name should match with trailing slash");

        assertTrue(it.hasNext(), "Expected second element available");
        SmbResource r2 = it.next();
        assertNotNull(r2);
        assertEquals("bar/", r2.getName(), "Second child name should match with trailing slash");

        // End of iteration behavior
        assertFalse(it.hasNext(), "No more elements expected");

     *
     * @return the remaining lifetime in seconds. If the default lifetime is
     *         used, this value have no meaning.
     *
     */
    public int getUserLifeTime() {
        return this.userLifetime;
    }

    /**
     * Set lifetime of current user.
     *
     * @param time
     *            the lifetime in seconds
     *
     */
    public void setUserLifeTime(int time) {

        }
    }

    /**
     * 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) {

                    endLatch.countDown();
                }
            });
        }

        startLatch.countDown(); // Start all threads
        assertTrue(endLatch.await(30, TimeUnit.SECONDS), "All threads should complete within timeout");
        executor.shutdown();

        long overallEnd = System.nanoTime();
        double overallTimeMs = (overallEnd - overallStart) / 1_000_000.0;

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    {% if not config.extra.generator == false %}
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            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

        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]);
    }

    /**