private static final ImmutableSet<ByteSink> BROKEN_SINKS =
      ImmutableSet.of(BROKEN_CLOSE_SINK, BROKEN_OPEN_SINK, BROKEN_WRITE_SINK);

  public void testCopyExceptions() {
    // test that exceptions are suppressed

    for (ByteSource in : BROKEN_SOURCES) {
      int suppressed = runSuppressionFailureTest(in, newNormalByteSink());
      assertEquals(0, suppressed);

//   "/job:localhost/replica:0/task:0/device:CUSTOM:0"
// and `underlying_devices` is
//   {"/job:localhost/replica:0/task:0/device:GPU:0",
//    "/job:localhost/replica:0/task:0/device:GPU:1"}
// Then executing an operation on CUSTOM:0 will execute it on GPU:0 and GPU:1.
//
// Implicit copies onto `device_name` are allowed, replicating the value once
// per device in `underlying_devices`. Implicit copies off of the device throw

   * assertBasicUrlEscaper() unless the escaper explicitly does not escape '%'.
   */
  static void assertBasicUrlEscaperExceptPercent(UnicodeEscaper e) {
    // URL escapers should throw null pointer exceptions for null input
    try {
      e.escape((String) null);
      fail("Escaping null string should throw exception");
    } catch (NullPointerException x) {
      // pass
    }

 * possibly run in another thread. That cause should itself be an {@code Error}; if not, use {@code
 * ExecutionException} or {@link UncheckedExecutionException}. This allows the client code to
 * continue to distinguish between exceptions and errors, even when they come from other threads.
 *
 * @author Chris Povirk
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class ExecutionError extends Error {
  /*

 * </ul>
 *
 * <p>Because of this situation, any public method accepting an iterable should invoke the {@code
 * iterator} method only once, and should be tested using this class. Exceptions to this rule should
 * be clearly documented.
 *
 * <p>Note that although your APIs should be liberal in what they accept, your methods which

✋️ 💼 👆 💪 ⚫️ 🏧 😐, 👆 💪 🚮 🛃 🎚:

```Python hl_lines="14"
{!../../docs_src/handling_errors/tutorial002.py!}
```

## ❎ 🛃 ⚠ 🐕‍🦺

👆 💪 🚮 🛃 ⚠ 🐕‍🦺 ⏮️ <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">🎏 ⚠ 🚙 ⚪️➡️ 💃</a>.

➡️ 💬 👆 ✔️ 🛃 ⚠ `UnicornException` 👈 👆 (⚖️ 🗃 👆 ⚙️) 💪 `raise`.

&amp; 👆 💚 🍵 👉 ⚠ 🌐 ⏮️ FastAPI.

👆 💪 🚮 🛃 ⚠ 🐕‍🦺 ⏮️ `@app.exception_handler()`:

  private static final ImmutableSet<CharSink> BROKEN_SINKS =
      ImmutableSet.of(BROKEN_CLOSE_SINK, BROKEN_OPEN_SINK, BROKEN_WRITE_SINK);

  public void testCopyExceptions() {
    // test that exceptions are suppressed

    for (CharSource in : BROKEN_SOURCES) {
      int suppressed = runSuppressionFailureTest(in, newNormalCharSink());
      assertEquals(0, suppressed);

import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination;
import static com.google.common.util.concurrent.Uninterruptibles.awaitUninterruptibly;
import static java.util.concurrent.Executors.newSingleThreadExecutor;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.util.concurrent.ClosingFuture.ClosingCallable;

 */
@AndroidIncompatible // depends on details of gc

public class GcFinalizationTest extends TestCase {

  // ----------------------------------------------------------------
  // Ordinary tests of successful method execution
  // ----------------------------------------------------------------

  public void testAwait_countDownLatch() {
    final CountDownLatch latch = new CountDownLatch(1);
    Object unused =
        new Object() {

        if (lookup == null) {
            return customLifecycles != null ? customLifecycles : new HashMap<>();
        }

        // Lifecycles cannot be cached as extensions might add custom lifecycles later in the execution.
        try {
            return registry != null
                    ? registry.stream().collect(Collectors.toMap(lf -> lf.id(), lf -> new Lifecycle(registry, lf)))
                    : Map.of();