*/
  public static <K, V> ImmutableMultimap<K, V> copyOf(Multimap<? extends K, ? extends V> multimap) {
    if (multimap instanceof ImmutableMultimap) {
      @SuppressWarnings("unchecked") // safe since multimap is not writable
      ImmutableMultimap<K, V> kvMultimap = (ImmutableMultimap<K, V>) multimap;
      if (!kvMultimap.isPartialView()) {
        return kvMultimap;
      }

   */
  public static <K, V> ImmutableMultimap<K, V> copyOf(Multimap<? extends K, ? extends V> multimap) {
    if (multimap instanceof ImmutableMultimap) {
      @SuppressWarnings("unchecked") // safe since multimap is not writable
      ImmutableMultimap<K, V> kvMultimap = (ImmutableMultimap<K, V>) multimap;
      if (!kvMultimap.isPartialView()) {
        return kvMultimap;
      }

 */
package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;

/**
 * A dummy superclass of {@link ImmutableMultimap} that can be instanceof'd without ProGuard
 * retaining additional implementation details of {@link ImmutableMultimap}.
 */
@GwtCompatible

  }

  @Override
  protected Map<String, Collection<Integer>> makeEmptyMap() {
    return ImmutableMultimap.<String, Integer>of().asMap();
  }

  @Override
  protected Map<String, Collection<Integer>> makePopulatedMap() {
    Multimap<String, Integer> delegate = HashMultimap.create();
    populate(delegate);
    return ImmutableMultimap.copyOf(delegate).asMap();
  }

  }

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(ImmutableMultimap.of(), ImmutableMultimap.of())
        .addEqualityGroup(ImmutableMultimap.of(1, "a"), ImmutableMultimap.of(1, "a"))
        .addEqualityGroup(
            ImmutableMultimap.of(1, "a", 2, "b"), ImmutableMultimap.of(2, "b", 1, "a"))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection

import com.google.common.collect.ImmutableMultimap;
import com.google.common.util.concurrent.Service.State;

/**
 * Superinterface of {@link ServiceManager} to introduce a bridge method for {@code
 * servicesByState()}, to ensure binary compatibility with older Guava versions that specified
 * {@code servicesByState()} to return {@code ImmutableMultimap}.
 */
@J2ktIncompatible
@GwtIncompatible

 */
package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;

/**
 * A dummy superclass of {@link ImmutableMultimap} that can be instanceof'd without ProGuard
 * retaining additional implementation details of {@link ImmutableMultimap}.
 */
@GwtCompatible

  }

  public void testInvertFrom() {
    ImmutableMultimap<Integer, String> empty = ImmutableMultimap.of();

    // typical usage example - sad that ArrayListMultimap.create() won't work
    Multimap<String, Integer> multimap =
        Multimaps.invertFrom(empty, ArrayListMultimap.<String, Integer>create());
    assertTrue(multimap.isEmpty());

    ImmutableMultimap<Integer, String> single =

    assertFreshInstance(new TypeToken<ImmutableSortedMap<String, Integer>>() {});
  }

  public void testImmutableMultimap() {
    assertFreshInstance(new TypeToken<ImmutableMultimap<String, Integer>>() {});
    assertNotInstantiable(new TypeToken<ImmutableMultimap<EmptyEnum, String>>() {});
  }

  public void testImmutableListMultimap() {
    assertFreshInstance(new TypeToken<ImmutableListMultimap<String, Integer>>() {});
  }

   *
   * <p>Because an inverse of a list multimap can contain multiple pairs with the same key and
   * value, this method returns an {@code ImmutableListMultimap} rather than the {@code
   * ImmutableMultimap} specified in the {@code ImmutableMultimap} class.
   *
   * @since 11.0
   */
  @Override
  public ImmutableListMultimap<V, K> inverse() {
    ImmutableListMultimap<V, K> result = inverse;