}
    assertSplitterIterableIsLazy(Splitter.onPattern(","));
  }

  /**
   * This test really pushes the boundaries of what we support. In general the splitter's behaviour
   * is not well defined if the char sequence it's splitting is mutated during iteration.
   */
  private void assertSplitterIterableIsLazy(Splitter splitter) {
    StringBuilder builder = new StringBuilder();

	if err != nil {
		t.Errorf("DropTable err:%v", err)
	}

	// create sequence
	err = DB.Table("events").AutoMigrate(&Event1{})
	if err != nil {
		t.Errorf("AutoMigrate err:%v", err)
	}

	// delete sequence
	err = DB.Table("events").AutoMigrate(&Event{})
	if err != nil {
		t.Errorf("AutoMigrate err:%v", err)
	}

	// update sequence
	err = DB.Table("events").AutoMigrate(&Event1{})
	if err != nil {

   */
  public final boolean isEmpty() {
    return !getDelegate().iterator().hasNext();
  }

  /**
   * Returns an {@code ImmutableList} containing all of the elements from this fluent iterable in
   * proper sequence.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code ImmutableList.copyOf(stream.iterator())}, or pass
   * {@link ImmutableList#toImmutableList} to {@code stream.collect()}.
   *

   */
  public final boolean isEmpty() {
    return !getDelegate().iterator().hasNext();
  }

  /**
   * Returns an {@code ImmutableList} containing all of the elements from this fluent iterable in
   * proper sequence.
   *
   * <p><b>{@code Stream} equivalent:</b> pass {@link ImmutableList#toImmutableList} to {@code
   * stream.collect()}.
   *
   * @throws NullPointerException if any element is {@code null}

    // This lock protects the task so we can ensure that none of the template methods (startUp,
    // shutDown or runOneIteration) run concurrently with one another.
    // TODO(lukes): why don't we use ListenableFuture to sequence things? Then we could drop the
    // lock.
    private final ReentrantLock lock = new ReentrantLock();

    @WeakOuter
    final class Task implements Runnable {
      @Override
      public void run() {

    // This lock protects the task so we can ensure that none of the template methods (startUp,
    // shutDown or runOneIteration) run concurrently with one another.
    // TODO(lukes): why don't we use ListenableFuture to sequence things? Then we could drop the
    // lock.
    private final ReentrantLock lock = new ReentrantLock();

    @WeakOuter
    final class Task implements Runnable {
      @Override
      public void run() {

    }

    // ============================================================
    // System and UI Constants
    // ============================================================

    /** System line separator character sequence. */
    public static final String LINE_SEPARATOR = System.lineSeparator();

    /** Default page number for admin interface pagination. */
    public static final int DEFAULT_ADMIN_PAGE_NUMBER = 1;

      // This guarantees a deterministic sequence when handling the canceled request:
      // 1. Server reads request and dequeues first response
      // 2. Client cancels request
      // 3. Server tries to send response on the canceled stream
      // Otherwise, there is no guarantee for the sequence. For example, the server may use the

      Object arg = args.get(i);
      // Use new fresh value generator because 'args' were populated with new fresh generator each.
      // Two newFreshValueGenerator() instances should normally generate equal value sequence.
      Object shouldBeEqualArg = generateDummyArg(param, newFreshValueGenerator());
      if (arg != shouldBeEqualArg
          && Objects.equals(arg, shouldBeEqualArg)

    );
    
    assertNotNull(registration.getRegistrationId());
    assertEquals(WitnessRegistrationState.REGISTERING, registration.getState());
    assertFalse(registration.isExpired(60000));
    
    // Test sequence numbers
    long seq1 = registration.getNextSequenceNumber();
    long seq2 = registration.getNextSequenceNumber();
    assertEquals(seq1 + 1, seq2);
}

@Test
public void testWitnessNotification() {