"testNullPointers", "testNullPointer",
          "testNullPointerExceptions", "testNullPointerException");

  /* The names of the expected method that tests serializable. */
  private static final ImmutableList<String> SERIALIZABLE_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testSerializable", "testSerialization",
          "testEqualsAndSerializable", "testEqualsAndSerialization");

   * com.google.common.collect.Ordering#lexicographical} does for orderings.
   *
   * <p>The returned object is serializable if this object is serializable.
   *
   * @since 10.0
   */
  @GwtCompatible(serializable = true)
  public final <S extends @Nullable T> Equivalence<Iterable<S>> pairwise() {
    // Ideally, the returned equivalence would support Iterable<? extends T>. However,

   * com.google.common.collect.Ordering#lexicographical} does for orderings.
   *
   * <p>The returned object is serializable if this object is serializable.
   *
   * @since 10.0
   */
  @GwtCompatible(serializable = true)
  public final <S extends @Nullable T> Equivalence<Iterable<S>> pairwise() {
    // Ideally, the returned equivalence would support Iterable<? extends T>. However,

    mapFeatures = new HashSet<>(mapFeatures);
    Set<Feature<?>> derivedFeatures = new HashSet<>();
    mapFeatures.remove(CollectionFeature.SERIALIZABLE);
    if (mapFeatures.remove(CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS)) {
      derivedFeatures.add(CollectionFeature.SERIALIZABLE);
    }
    if (mapFeatures.contains(MapFeature.SUPPORTS_REMOVE)) {
      derivedFeatures.add(CollectionFeature.SUPPORTS_REMOVE);
    }

    mapFeatures = new HashSet<>(mapFeatures);
    Set<Feature<?>> derivedFeatures = new HashSet<>();
    mapFeatures.remove(CollectionFeature.SERIALIZABLE);
    if (mapFeatures.remove(CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS)) {
      derivedFeatures.add(CollectionFeature.SERIALIZABLE);
    }
    if (mapFeatures.contains(MapFeature.SUPPORTS_REMOVE)) {
      derivedFeatures.add(CollectionFeature.SUPPORTS_REMOVE);
    }

   * concurrently and one of the threads modifies the table, it must be synchronized externally.
   *
   * <p>The table is serializable if {@code backingMap}, {@code factory}, the maps generated by
   * {@code factory}, and the table contents are all serializable.
   *
   * <p>Note: the table assumes complete ownership over of {@code backingMap} and the maps returned

  private static final class RemoveFirstFunction implements Function<String, String>, Serializable {
    @Override
    public String apply(String from) {
      return (from.length() == 0) ? from : from.substring(1);
    }
  }

  private static class SomeIterable implements Iterable<Integer>, Serializable {
    @Override
    public Iterator<Integer> iterator() {
      return SOME_COLLECTION.iterator();
    }

          "testNullPointers", "testNullPointer",
          "testNullPointerExceptions", "testNullPointerException");

  /* The names of the expected method that tests serializable. */
  private static final ImmutableList<String> SERIALIZABLE_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testSerializable", "testSerialization",
          "testEqualsAndSerializable", "testEqualsAndSerialization");

import com.google.common.annotations.VisibleForTesting;
import java.io.Serializable;
import java.time.Duration;
import java.util.concurrent.TimeUnit;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Useful suppliers.
 *
 * <p>All methods return serializable suppliers as long as they're given serializable parameters.
 *
 * @author Laurence Gonsalves
 * @author Harry Heymann

            .named(ImmutableSetTest.class.getName())
            .withFeatures(
                CollectionSize.ANY,
                CollectionFeature.KNOWN_ORDER,
                CollectionFeature.SERIALIZABLE,
                CollectionFeature.ALLOWS_NULL_QUERIES)
            .createTestSuite());

    suite.addTest(
        SetTestSuiteBuilder.using(new ImmutableSetUnsizedBuilderGenerator())