}
      return Maps.immutableEnumMap(map);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator())
            .named("Maps.immutableEnumMap")

      }
      return Maps.immutableEnumMap(map);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator())
            .named("Maps.immutableEnumMap")

      Map<AnEnum, String> map = new HashMap<>();
      for (Entry<AnEnum, String> entry : entries) {
        checkNotNull(entry);
        map.put(entry.getKey(), entry.getValue());
      }
      return Maps.immutableEnumMap(map);
    }
  }

  public static class ImmutableMapCopyOfEnumMapGenerator extends TestEnumMapGenerator {
    @Override
    protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) {

      Map<AnEnum, String> map = new HashMap<>();
      for (Entry<AnEnum, String> entry : entries) {
        checkNotNull(entry);
        map.put(entry.getKey(), entry.getValue());
      }
      return Maps.immutableEnumMap(map);
    }
  }

  public static class ImmutableMapCopyOfEnumMapGenerator extends TestEnumMapGenerator {
    @Override
    protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) {

      } else {
        other.map.forEach(this::put);
        return this;
      }
    }

    ImmutableMap<K, V> toImmutableMap() {
      return (map == null) ? ImmutableMap.<K, V>of() : ImmutableEnumMap.asImmutable(map);
    }
  }

  @GwtIncompatible
  static <T extends @Nullable Object, K extends Comparable<? super K>, V>
      Collector<T, ?, ImmutableRangeMap<K, V>> toImmutableRangeMap(

      } else {
        other.map.forEach(this::put);
        return this;
      }
    }

    ImmutableMap<K, V> toImmutableMap() {
      return (map == null) ? ImmutableMap.<K, V>of() : ImmutableEnumMap.asImmutable(map);
    }
  }

  @GwtIncompatible
  static <T extends @Nullable Object, K extends Comparable<? super K>, V>
      Collector<T, ?, ImmutableRangeMap<K, V>> toImmutableRangeMap(

      @SuppressWarnings({"unchecked", "rawtypes"})
      // immutable collections are safe for covariant casts
      // and getting the generics right for EnumMap is difficult to impossible
      ImmutableMap<K, V> result = ImmutableEnumMap.asImmutable(new EnumMap(enumMap));
      return result;
    }

    int size = map.size();
    switch (size) {
      case 0:
        return of();
      case 1:

    EnumMap<K, V> copy = new EnumMap<>((EnumMap<K, ? extends V>) original);
    for (Entry<K, V> entry : copy.entrySet()) {
      checkEntryNotNull(entry.getKey(), entry.getValue());
    }
    return ImmutableEnumMap.asImmutable(copy);
  }

  static final Entry<?, ?>[] EMPTY_ENTRY_ARRAY = new Entry<?, ?>[0];

  abstract static class IteratorBasedImmutableMap<K, V> extends ImmutableMap<K, V> {