private static final class AlwaysEqual extends Ordering<@Nullable Object>
      implements Serializable {
    private static final AlwaysEqual INSTANCE = new AlwaysEqual();

    @Override
    @SuppressWarnings("UnusedVariable") // intentionally weird Comparator
    public int compare(@Nullable Object o1, @Nullable Object o2) {
      return 0;
    }

    @Override

import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests the object generated
 * by a G, selecting appropriate tests by matching them against specified features.
 *

import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.nio.CharBuffer;
import java.util.Arrays;
import java.util.logging.Logger;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * {@link SourceSinkFactory} implementations.
 *
 * @author Colin Decker
 */
public class SourceSinkFactories {

  private SourceSinkFactories() {}

    Callable<@Nullable Void> cancelRunnable =
        new Callable<@Nullable Void>() {
          @Override
          public @Nullable Void call() {
            cancellationSuccess.set(currentFuture.get().cancel(true));
            awaitUnchecked(barrier);
            return null;
          }
        };
    Callable<@Nullable Void> setFutureCompleteSuccessfullyRunnable =

  public void testTransformEntrySetContains() {
    Map<@Nullable String, @Nullable Boolean> underlying = Maps.newHashMap();
    underlying.put("a", null);
    underlying.put("b", true);
    underlying.put(null, true);

    Map<@Nullable String, @Nullable Boolean> map =
        transformValues(
            underlying,
            new Function<@Nullable Boolean, @Nullable Boolean>() {
              @Override

    final SettableFuture<@Nullable Void> settableFuture = SettableFuture.create();
    ArrayList<ListenableFuture<@Nullable Void>> results = new ArrayList<>(50_001);
    results.add(
        serializer.submitAsync(
            new AsyncCallable<@Nullable Void>() {
              @Override
              public ListenableFuture<@Nullable Void> call() {
                return settableFuture;

    }

    @Override
    Map<R, @Nullable V> getValue(int index) {
      return new Column(index);
    }

    @Override
    Map<R, @Nullable V> setValue(int index, Map<R, @Nullable V> newValue) {
      throw new UnsupportedOperationException();
    }

    @Override
    @CheckForNull
    public Map<R, @Nullable V> put(C key, Map<R, @Nullable V> value) {
      throw new UnsupportedOperationException();

@ElementTypesAreNonnullByDefault
public final class LinkedHashMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends LinkedHashMultimapGwtSerializationDependencies<K, V> {

  /** Creates a new, empty {@code LinkedHashMultimap} with the default initial capacities. */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMultimap<K, V> create() {

                    @Nullable Project project,
                    @Nullable Artifact rootArtifact,
                    @Nullable DependencyCoordinates root,
                    @Nonnull Collection<DependencyCoordinates> dependencies,
                    @Nonnull Collection<DependencyCoordinates> managedDependencies,
                    boolean verbose,
                    @Nullable PathScope pathScope,

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Derived suite generators, split out of the suite builders so that they are available to GWT.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class DerivedCollectionGenerators {
  public static class MapEntrySetGenerator<K extends @Nullable Object, V extends @Nullable Object>