Multimap<String, Integer> multimap = createMultimap();
    Multimap<String, Integer> hashMultimap = HashMultimap.create();
    hashMultimap.putAll("foo", Arrays.asList(1, 3));
    hashMultimap.put("bar", 2);

    new EqualsTester()
        .addEqualityGroup(
            multimap,
            createMultimap(),
            hashMultimap,
            ImmutableSetMultimap.<String, Integer>builder()
                .put("bar", 2)

    Multimap<String, Integer> multimap = createMultimap();
    Multimap<String, Integer> hashMultimap = HashMultimap.create();
    hashMultimap.putAll("foo", Arrays.asList(1, 3));
    hashMultimap.put("bar", 2);

    new EqualsTester()
        .addEqualityGroup(
            multimap,
            createMultimap(),
            hashMultimap,
            ImmutableSetMultimap.<String, Integer>builder()
                .put("bar", 2)

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.common.collect.Maps;
import com.google.common.collect.Multimap;
import com.google.common.reflect.ClassPath;

import com.google.common.base.MoreObjects;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterators;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBasedTable;
import com.google.common.collect.HashBiMap;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.HashMultiset;
import com.google.common.collect.ImmutableBiMap;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;

    return generateLinkedHashMultimap(key, value);
  }

  @Generates
  static <K, V> HashMultimap<K, V> generateHashMultimap(@Nullable K key, @Nullable V value) {
    HashMultimap<K, V> multimap = HashMultimap.create();
    multimap.put(key, value);
    return multimap;
  }

  @Generates
  static <K, V> LinkedHashMultimap<K, V> generateLinkedHashMultimap(

    return generateLinkedHashMultimap(key, value);
  }

  @Generates
  static <K, V> HashMultimap<K, V> generateHashMultimap(@Nullable K key, @Nullable V value) {
    HashMultimap<K, V> multimap = HashMultimap.create();
    multimap.put(key, value);
    return multimap;
  }

  @Generates
  static <K, V> LinkedHashMultimap<K, V> generateLinkedHashMultimap(

  public enum SetMultimapImpl {
    HashMultimapImpl {
      @Override
      <K extends Comparable<K>, V extends Comparable<V>> SetMultimap<K, V> create(
          Multimap<K, V> contents) {
        return HashMultimap.create(contents);
      }
    },
    LinkedHashMultimapImpl {
      @Override
      <K extends Comparable<K>, V extends Comparable<V>> SetMultimap<K, V> create(
          Multimap<K, V> contents) {

  }

  /** Test that creating one TreeMultimap from a non-TreeMultimap results in natural ordering. */
  public void testCreateFromHashMultimap() {
    Multimap<Double, Double> hash = HashMultimap.create();
    hash.put(1.0, 2.0);
    hash.put(2.0, 3.0);
    hash.put(3.0, 4.0);
    hash.put(4.0, 5.0);

    TreeMultimap<Double, Double> copyFromHash = TreeMultimap.create(hash);

 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multimap">{@code Multimap}</a>.
 *
 * @author Jared Levy
 * @since 2.0
 */
@DoNotMock("Use ImmutableMultimap, HashMultimap, or another implementation")
@GwtCompatible
public interface Multimap<K extends @Nullable Object, V extends @Nullable Object> {
  // Query Operations

  /**