* UnsupportedOperationException.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing

  @get:JvmName("connectTimeoutMillis")
  val connectTimeoutMillis: Int = builder.connectTimeout

  /** Default read timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("readTimeoutMillis")
  val readTimeoutMillis: Int = builder.readTimeout

  /** Default write timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("writeTimeoutMillis")

| `minio_cluster_iam_plugin_authn_service_last_fail_seconds`      | When plugin authentication is configured, returns time (in seconds) since the last failed request to the service. <br><br>Type: counter         |        |
| `minio_cluster_iam_plugin_authn_service_last_succ_seconds`      | When plugin authentication is configured, returns time (in seconds) since the last successful request to the service. <br><br>Type: counter     |        |

import static java.util.concurrent.Executors.newFixedThreadPool;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import java.time.Duration;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;

    // 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
    // waited and assert based on that time. Empirically, the race where the thread ends up waiting
    // for 5.5 seconds happens about 2% of the time.

		var s strings.Builder
		for k, v := range listedConfigItems {
			s.WriteString(fmt.Sprintf("    %s: %d items\n", k, len(v)))
		}
		logger.Info("listAllIAMConfigItems took %.2fs with contents:\n%s", took.Seconds(), s.String())
	}

	// Loads things in the same order as `LoadIAMCache()`

	bootstrapTraceMsgFirstTime("loading policy documents")

	policyLoadStartTime := UTCNow()

    private static final long MAX_POLL_INTERVAL = 30000;
    private static final long BASE_RETRY_DELAY = 1000;
    private static final long MAX_RETRY_DELAY = 30000;
    private static final int MAX_BACKOFF_SHIFT = 3; // Maximum 8 seconds (2^3 * 1000ms)

    private final DirectoryLeaseManager leaseManager;
    private final ConcurrentHashMap<String, ChangeNotificationHandle> activeWatchers;
    private final ConcurrentHashMap<String, Integer> failureCounts;

  private var lastTimestampNs: Long? = null

  /** Confirm that the thread does not hold a lock on `lock` during the callback. */
  fun forbidLock(lock: Any) {
    forbiddenLocks.add(lock)
  }

  /**
   * Removes recorded events up to (and including) an event is found whose class equals [eventClass]
   * and returns it.
   */
  fun <T : ConnectionEvent> removeUpToEvent(eventClass: Class<T>): T {
    val fullEventSequence = eventSequence.toList()

	pluginAuthnServiceLastSuccSecondsMD      = NewCounterMD(pluginAuthnServiceLastSuccSeconds, "When plugin authentication is configured, returns time (in seconds) since the last successful request to the service")

import static java.util.concurrent.Executors.newCachedThreadPool;
import static java.util.concurrent.Executors.newSingleThreadExecutor;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.CancellationException;