*
   * @since 19.0
   */
  public final boolean isSubtypeOf(Type supertype) {
    checkNotNull(supertype);
    if (supertype instanceof WildcardType) {
      // if 'supertype' is <? super Foo>, 'this' can be:
      // Foo, SubFoo, <? extends Foo>.
      // if 'supertype' is <? extends Foo>, nothing is a subtype.
      return any(((WildcardType) supertype).getLowerBounds()).isSupertypeOf(runtimeType);
    }

    TypeToken<TwoTypeArgs<?, ?>> supertype = new TypeToken<TwoTypeArgs<?, ?>>() {};
    TypeToken<StringForFirstTypeArg<String>> subtype =
        new TypeToken<StringForFirstTypeArg<String>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));
    assertEquals(
        new TypeToken<StringForFirstTypeArg<?>>() {}, supertype.getSubtype(subtype.getRawType()));
  }

    TypeToken<TwoTypeArgs<?, ?>> supertype = new TypeToken<TwoTypeArgs<?, ?>>() {};
    TypeToken<StringForFirstTypeArg<String>> subtype =
        new TypeToken<StringForFirstTypeArg<String>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));
    assertEquals(
        new TypeToken<StringForFirstTypeArg<?>>() {}, supertype.getSubtype(subtype.getRawType()));
  }

package com.google.common.graph;

import java.util.Set;

/**
 * Supertype for {@link Graphs}, containing the old signatures of methods whose signatures we've
 * changed. This provides binary compatibility for users who compiled against the old signatures.
 */
abstract class GraphsBridgeMethods {

  @SuppressWarnings("PreferredInterfaceType")
  public static <N> Graph<N> transitiveClosure(Graph<N> graph) {
    return Graphs.transitiveClosure(graph);

    assertWithMessage("%s is subtype of %s", paramType, returnType)
        .that(TypeToken.of(paramType).isSubtypeOf(returnType))
        .isTrue();
    assertWithMessage("%s is supertype of %s", returnType, paramType)
        .that(TypeToken.of(returnType).isSupertypeOf(paramType))
        .isTrue();
    if (!spec.suppressGetSubtype()) {

    assertWithMessage("%s is subtype of %s", paramType, returnType)
        .that(TypeToken.of(paramType).isSubtypeOf(returnType))
        .isTrue();
    assertWithMessage("%s is supertype of %s", returnType, paramType)
        .that(TypeToken.of(returnType).isSupertypeOf(paramType))
        .isTrue();
    if (!spec.suppressGetSubtype()) {

    EnumBiMap<Currency, Country> bimap1 = EnumBiMap.create(Currency.class, Country.class);
    bimap1.put(Currency.DOLLAR, Country.SWITZERLAND);
    EnumHashBiMap<Currency, Object> bimap2 = // use supertype
        EnumHashBiMap.<Currency, Object>create(bimap1);
    assertEquals(Country.SWITZERLAND, bimap2.get(Currency.DOLLAR));
    assertEquals(bimap1, bimap2);
    bimap2.inverse().put("franc", Currency.FRANC);

    assertWithMessage("Correct string should be delivered.").that(events.get(0)).isEqualTo(EVENT);
  }

  /**
   * Tests that events are distributed to any subscribers to their type or any supertype, including
   * interfaces and superclasses.
   *
   * <p>Also checks delivery ordering in such cases.
   */
  public void testPolymorphicDistribution() {

    assertWithMessage("Correct string should be delivered.").that(events.get(0)).isEqualTo(EVENT);
  }

  /**
   * Tests that events are distributed to any subscribers to their type or any supertype, including
   * interfaces and superclasses.
   *
   * <p>Also checks delivery ordering in such cases.
   */
  public void testPolymorphicDistribution() {

    EnumBiMap<Currency, Country> bimap1 = EnumBiMap.create(Currency.class, Country.class);
    bimap1.put(Currency.DOLLAR, Country.SWITZERLAND);
    EnumHashBiMap<Currency, Object> bimap2 = // use supertype
        EnumHashBiMap.<Currency, Object>create(bimap1);
    assertEquals(Country.SWITZERLAND, bimap2.get(Currency.DOLLAR));
    assertEquals(bimap1, bimap2);
    bimap2.inverse().put("franc", Currency.FRANC);