import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.MoreExecutors.renamingDecorator;
import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination;
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.MINUTES;
import static java.util.concurrent.TimeUnit.NANOSECONDS;

import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.MoreExecutors.renamingDecorator;
import static com.google.common.util.concurrent.MoreExecutors.shutdownAndAwaitTermination;
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.MINUTES;
import static java.util.concurrent.TimeUnit.NANOSECONDS;

   */
  @CanIgnoreReturnValue
  @J2ktIncompatible
  @GwtIncompatible // java.time.Duration
  public static boolean shutdownAndAwaitTermination(ExecutorService service, Duration timeout) {
    return shutdownAndAwaitTermination(service, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
  }

  /**
   * Shuts down the given executor service gradually, first disabling new submissions and later, if