}
    return returnValue;
  }

  // This is the old implementation of ExecutionList using a LinkedList.
  private static final class OldExecutionList {
    static final Logger log = Logger.getLogger(OldExecutionList.class.getName());
    final Queue<OldExecutionList.RunnableExecutorPair> runnables = Lists.newLinkedList();
    boolean executed = false;

    public void add(Runnable runnable, Executor executor) {

 *
 * @author Luiz-Otavio Zorzella
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class SloppyTearDown implements TearDown {
  private static final Logger logger = Logger.getLogger(SloppyTearDown.class.getName());

  @Override
  public final void tearDown() {
    try {
      sloppyTearDown();
    } catch (Throwable t) {

 *
 * @author Michael Lancaster
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class Closeables {
  @VisibleForTesting static final Logger logger = Logger.getLogger(Closeables.class.getName());

  private Closeables() {}

  /**
   * Closes a {@link Closeable}, with control over whether an {@code IOException} may be thrown.

 *
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class TearDownStack implements TearDownAccepter {
  private static final Logger logger = Logger.getLogger(TearDownStack.class.getName());

  @GuardedBy("stack")
  final LinkedList<TearDown> stack = new LinkedList<>();

  private final boolean suppressThrows;

  public TearDownStack() {

 *
 * @author Jesse Wilson
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
final class Platform {
  private static final Logger logger = Logger.getLogger(Platform.class.getName());
  private static final PatternCompiler patternCompiler = loadPatternCompiler();

  private Platform() {}

  static CharMatcher precomputeCharMatcher(CharMatcher matcher) {

 *
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class TearDownStack implements TearDownAccepter {
  private static final Logger logger = Logger.getLogger(TearDownStack.class.getName());

  @GuardedBy("stack")
  final LinkedList<TearDown> stack = new LinkedList<>();

  private final boolean suppressThrows;

  public TearDownStack() {

 *
 * @author Michael Lancaster
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class Flushables {
  private static final Logger logger = Logger.getLogger(Flushables.class.getName());

  private Flushables() {}

  /**
   * Flush a {@link Flushable}, with control over whether an {@code IOException} may be thrown.
   *

    if (local != null) {
      return local;
    }
    synchronized (this) {
      local = logger;
      if (local != null) {
        return local;
      }
      return logger = Logger.getLogger(loggerName);
    }
  }

 *
 * @author Luiz-Otavio Zorzella
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class SloppyTearDown implements TearDown {
  private static final Logger logger = Logger.getLogger(SloppyTearDown.class.getName());

  @Override
  public final void tearDown() {
    try {
      sloppyTearDown();
    } catch (Throwable t) {

   * and stopped at the same time. This test ensures that listeners fire and isHealthy makes sense.
   */
  public void testEmptyServiceManager() {
    Logger logger = Logger.getLogger(ServiceManager.class.getName());
    logger.setLevel(Level.FINEST);
    TestLogHandler logHandler = new TestLogHandler();
    logger.addHandler(logHandler);