* @since 10.0
   */
  public static Ticker systemTicker() {
    return SYSTEM_TICKER;
  }

  private static final Ticker SYSTEM_TICKER =
      new Ticker() {
        @Override
        @SuppressWarnings("GoodTime") // reading system time without TimeSource
        public long read() {
          return System.nanoTime();
        }
      };

/**
 * Imposes a time limit on method calls.
 *
 * @author Kevin Bourrillion
 * @author Jens Nyman
 * @since 1.0
 */
@DoNotMock("Use FakeTimeLimiter")
@J2ktIncompatible
@GwtIncompatible
@SuppressWarnings("GoodTime") // should have java.time.Duration overloads
@ElementTypesAreNonnullByDefault
public interface TimeLimiter {

  /**
   * Returns an instance of {@code interfaceType} that delegates all method calls to the {@code

    public void recordMisses(int count) {
      missCount.add(count);
    }

    @SuppressWarnings("GoodTime") // b/122668874
    @Override
    public void recordLoadSuccess(long loadTime) {
      loadSuccessCount.increment();
      totalLoadTime.add(loadTime);
    }

    @SuppressWarnings("GoodTime") // b/122668874
    @Override
    public void recordLoadException(long loadTime) {

 *        }
 *      });
 * }</pre>
 *
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible(emulated = true)
@SuppressWarnings("GoodTime") // lots of violations
@ElementTypesAreNonnullByDefault
public final class Stopwatch {
  private final Ticker ticker;
  private boolean isRunning;
  private long elapsedNanos;
  private long startTick;

 * CacheBuilder#from(CacheBuilderSpec)} or {@link CacheBuilder#from(String)}.
 *
 * @author Adam Winer
 * @since 12.0
 */
@SuppressWarnings("GoodTime") // lots of violations (nanosecond math)
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class CacheBuilderSpec {
  /** Parses a single value. */
  private interface ValueParser {

    }
  }

  private static final class JavaIoCreator extends TempFileCreator {
    @Override
    File createTempDir() {
      File baseDir = new File(JAVA_IO_TMPDIR.value());
      @SuppressWarnings("GoodTime") // reading system time without TimeSource
      String baseName = System.currentTimeMillis() + "-";

      for (int counter = 0; counter < TEMP_DIR_ATTEMPTS; counter++) {

   * @throws InterruptedException if interrupted while waiting
   */
  @CanIgnoreReturnValue
  @J2ktIncompatible
  @GwtIncompatible // BlockingQueue
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  public static <E> int drain(
      BlockingQueue<E> q,
      Collection<? super E> buffer,
      int numElements,
      long timeout,
      TimeUnit unit)

 *        }
 *      });
 * }</pre>
 *
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible(emulated = true)
@SuppressWarnings("GoodTime") // lots of violations
@ElementTypesAreNonnullByDefault
public final class Stopwatch {
  private final Ticker ticker;
  private boolean isRunning;
  private long elapsedNanos;
  private long startTick;

  /**

   * @param scheduledExecutor The executor service to enforce the timeout.
   */
  @J2ktIncompatible
  @GwtIncompatible // ScheduledExecutorService
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  public final FluentFuture<V> withTimeout(
      long timeout, TimeUnit unit, ScheduledExecutorService scheduledExecutor) {

     * @param delay the delay between the termination of one execution and the commencement of the
     *     next
     * @param unit the time unit of the initialDelay and delay parameters
     */
    @SuppressWarnings("GoodTime") // should accept a java.time.Duration
    public static Scheduler newFixedDelaySchedule(
        final long initialDelay, final long delay, final TimeUnit unit) {
      checkNotNull(unit);