/**
     * Check if cache needs refresh
     *
     * @return true if refresh needed
     */
    public boolean needsRefresh() {
        return isExpired() || hasChanges;
    }

    /**
     * Mark the cache as complete (full enumeration cached)
     */
    public void markComplete() {
        lock.writeLock().lock();
        try {
            this.isComplete = true;
            this.hasChanges = false;

## Campos de lista

Puedes definir un atributo como un subtipo. Por ejemplo, una `list` en Python:

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

Esto hará que `tags` sea una lista, aunque no declare el tipo de los elementos de la lista.

## Campos de lista con parámetro de tipo

Pero Python tiene una forma específica de declarar listas con tipos internos, o "parámetros de tipo":

 *
 * (We could consider releasing a listenablefuture:1.0.1 someday. But we would want to look into how
 * that affects users, especially users of the Android Gradle Plugin, since the plugin developers
 * put in a special hack for us: https://issuetracker.google.com/issues/131431257)
 */
@DoNotMock("Use the methods in Futures (like immediateFuture) or SettableFuture")
@NullMarked

 *
 * (We could consider releasing a listenablefuture:1.0.1 someday. But we would want to look into how
 * that affects users, especially users of the Android Gradle Plugin, since the plugin developers
 * put in a special hack for us: https://issuetracker.google.com/issues/131431257)
 */
@DoNotMock("Use the methods in Futures (like immediateFuture) or SettableFuture")
@NullMarked

      // to ensure the first test of either value will fail.
      safeMax = -1;
      safeMin = Integer.MAX_VALUE;
    }
    this.safeMin = safeMin;
    this.safeMax = safeMax;

    // This is a bit of a hack but lets us do quicker per-character checks in
    // the fast path code. The safe min/max values are very unlikely to extend
    // into the range of surrogate characters, but if they do we must not test

                new SessionRequestPacket(mockConfig, new TestNetbiosName("SERVER", 0x20, null), new TestNetbiosName("CLIENT", 0x00, null));

        byte[] dst = new byte[256];
        int offset = 10;

        // Mark the buffer before offset
        for (int i = 0; i < offset; i++) {
            dst[i] = (byte) 0xFF;
        }

        int bytesWritten = packet.writeTrailerWireFormat(dst, offset);

Bu tür tip belirteçlerini desteklemek için özel olarak mevcuttur.

#### `List`

Örneğin `str` değerlerden oluşan bir `list` tanımlayalım.

From `typing`, import `List` (büyük harf olan `L` ile):

{* ../../docs_src/python_types/tutorial006.py hl[1] *}


Değişkenin tipini yine iki nokta üstüste (`:`) ile belirleyin.

tip olarak `List` kullanın.

	return tillOffset
}

// erasureSelfTest performs a self-test to ensure that erasure
// algorithms compute expected erasure codes. If any algorithm
// produces an incorrect value it fails with a hard error.
//
// erasureSelfTest tries to catch any issue in the erasure implementation
// early instead of silently corrupting data.
func erasureSelfTest() {
	// Approx runtime ~1ms
	var testConfigs [][2]uint8

   * @throws NullPointerException if any of {@code elements} is null
   */
  public static <E> ImmutableSortedSet<E> copyOf(Iterable<? extends E> elements) {
    // Hack around E not being a subtype of Comparable.
    // Unsafe, see ImmutableSortedSetFauxverideShim.
    @SuppressWarnings("unchecked")
    Ordering<E> naturalOrder = (Ordering<E>) Ordering.<Comparable<?>>natural();

    Thread.class.getMethod("resume").invoke(thread);
    thread.join();
    // It's possible to race and suspend the thread just before the park call actually takes effect,
    // causing the thread to be suspended for 3.5 seconds, and then park itself for 2 seconds after
    // being resumed. To avoid a flake in this scenario, calculate how long that thread actually