import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Generators of different types of map and related collections, such as keys, entries and values.
 *
 * @author Hayward Chan
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class MapGenerators {
  public static class ImmutableMapGenerator extends TestStringMapGenerator {
    @Override

import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Generators of different types of map and related collections, such as keys, entries and values.
 *
 * @author Hayward Chan
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class MapGenerators {
  public static class ImmutableMapGenerator extends TestStringMapGenerator {
    @Override

import java.util.stream.Collector;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * GWT emulation of {@link com.google.common.collect.ImmutableBiMap}.
 *
 * @author Hayward Chan
 */
@ElementTypesAreNonnullByDefault
public abstract class ImmutableBiMap<K, V> extends ForwardingImmutableMap<K, V>
    implements BiMap<K, V> {
  public static <T extends @Nullable Object, K, V>