@ElementTypesAreNonnullByDefault
public abstract class AbstractScheduledService implements Service {
  private static final LazyLogger logger = new LazyLogger(AbstractScheduledService.class);

  /**
   * A scheduler defines the policy for how the {@link AbstractScheduledService} should run its
   * task.
   *
   * <p>Consider using the {@link #newFixedDelaySchedule} and {@link #newFixedRateSchedule} factory