assertEquals(expected, map.asMultimap());
  }

  public void testAsMultimapWhenEmpty() {
    ImmutableMap<String, Integer> map = ImmutableMap.of();
    ImmutableSetMultimap<String, Integer> expected = ImmutableSetMultimap.of();
    assertEquals(expected, map.asMultimap());
  }

  public void testAsMultimapCaches() {

        Integer value = getOnlyElement(entry.getValue());
        builder.put(entry.getKey(), value);
      }
      return builder.buildOrThrow().asMultimap().asMap();
    }

    @Override
    @SuppressWarnings({"unchecked", "rawtypes"}) // needed for arrays
    public Entry<String, Collection<Integer>>[] createArray(int length) {
      return new Entry[length];

        Integer value = getOnlyElement(entry.getValue());
        builder.put(entry.getKey(), value);
      }
      return builder.buildOrThrow().asMultimap().asMap();
    }

    @Override
    @SuppressWarnings({"unchecked", "rawtypes"}) // needed for arrays
    public Entry<String, Collection<Integer>>[] createArray(int length) {
      return new Entry[length];