* operation in order to trigger shutdown, consider instead registering a listener and
   * implementing {@code stopping}. Note, however, that {@code stopping} does not run at exactly the
   * same times as {@code triggerShutdown}.
   */
  protected void triggerShutdown() {}

  /**
   * Returns the {@link Executor} that will be used to run this service. Subclasses may override

        String output = testOutput.toString();
        assertTrue(output.contains("test message"));
    }

    @Test
    void testSetInstanceMultipleTimes() {
        // Test setting instance multiple times
        PrintStream stream1 = new PrintStream(new ByteArrayOutputStream());
        PrintStream stream2 = new PrintStream(new ByteArrayOutputStream());

        LogStream.setInstance(stream1);

    .url("https://www.nytimes.com/")
    .build();
client.newCall(newYorkTimesRequest).enqueue(new Callback() {
  ...
});
```

Running this race over home WiFi shows the Times (`0002`) completes just slightly sooner than the Post (`0001`):

```
0001 https://www.washingtonpost.com/
0001 0.000 callStart
0002 https://www.nytimes.com/
0002 0.000 callStart
0002 0.010 dnsStart

        assertEquals(1.0, stats.successRate);
    }

    @Test
    @DisplayName("Test circuit opens after failure threshold")
    void testCircuitOpensAfterThreshold() {
        // Fail 3 times to open the circuit
        for (int i = 0; i < 3; i++) {
            try {
                circuitBreaker.call(() -> {
                    throw new RuntimeException("Test failure");
                });

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.security.SecureRandom;
import java.util.Arrays;
import java.util.Random;

import org.junit.jupiter.api.BeforeEach;

      } finally {
        currentThread.setName(originalName);
      }
    }
  }

  public void fetch(HttpUrl url) throws IOException {
    // Skip hosts that we've visited many times.
    AtomicInteger hostnameCount = new AtomicInteger();
    AtomicInteger previous = hostnames.putIfAbsent(url.host(), hostnameCount);
    if (previous != null) hostnameCount = previous;

        // splitIntoBuckets() method expects us to split large element into N elements,
        // but we want to have a single bucket with N batches.
        // As a workaround, we repeat the bucket N times, and deduplicate the result at the end
        val resultIncludingDuplicates =
            splitIntoBuckets(
                LinkedList(subProjectTestClassTimes),
                SubprojectTestClassTime::totalTime,

 *       testlib), but why bother?
 *   <li>Stripping code entirely might help us keep under the method limit someday. Even if it never
 *       comes to that, it may at least help with build and startup times.
 * </ul>
 */
@Retention(CLASS)
@Target({ANNOTATION_TYPE, CONSTRUCTOR, FIELD, METHOD, TYPE})
@GwtCompatible

		if timeout < dt.minimum {
			timeout = dt.minimum
		}
		atomic.StoreInt64(&dt.timeout, timeout)
	} else if failPct < dynamicTimeoutDecreaseThresholdPct {
		// We are hitting the timeout relatively few times,
		// so decrease the timeout towards 25 % of maximum time spent.
		maxDur = maxDur * 125 / 100

		timeout := atomic.LoadInt64(&dt.timeout)
		if maxDur < time.Duration(timeout) {
			// Move 50% toward the max.

        CountDownLatch endLatch = new CountDownLatch(threadCount);
        AtomicInteger releaseCount = new AtomicInteger(0);
        AtomicInteger acquireCount = new AtomicInteger(0);

        // Acquire session multiple times
        for (int i = 0; i < threadCount - 1; i++) {
            session.acquire();
        }

        // When - Multiple threads try to release/acquire concurrently
        for (int t = 0; t < threadCount; t++) {