*
     * @param cl
     *            the class loader
     * @param other
     *            the class loader to check as ancestor
     * @return <code>true</code> if <code>other</code> is an ancestor of <code>cl</code>
     */
    protected static boolean isAncestor(final ClassLoader cl, final ClassLoader other) {

     * about when we have an Object[] vs. a Comparable[] or other array type in internalArray? If we
     * used Object[], we might be able to optimize toArray() to use clone() sometimes. (See
     * cl/592273615 and cl/592273683.)
     */
    public Builder(Comparator<? super E> comparator) {
      this.comparator = checkNotNull(comparator);
    }

    Builder(Comparator<? super E> comparator, int expectedKeys) {

   * <p>See {@link #checkArgument(boolean, String, Object...)} for details.
   *
   * @since 20.0 (varargs overload since 2.0)
   */
  public static void checkArgument(
      boolean expression,
      // TODO: cl/604933487 - Make errorMessageTemplate consistently @Nullable across overloads.
      @Nullable String errorMessageTemplate,
      @Nullable Object p1,
      @Nullable Object p2) {
    if (!expression) {

        new TypeToken<StringForFirstTypeArg<Integer>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));

    // TODO(benyu): This should check equality to an expected value, see discussion in cl/98674873
    TypeToken<?> unused = supertype.getSubtype(subtype.getRawType());
  }

  public void testGetSubtype_baseClassWithNoTypeArgs() {
    class SingleGenericExtendsBase<T> extends Base {}

        new TypeToken<StringForFirstTypeArg<Integer>>() {};
    assertTrue(subtype.isSubtypeOf(supertype));

    // TODO(benyu): This should check equality to an expected value, see discussion in cl/98674873
    TypeToken<?> unused = supertype.getSubtype(subtype.getRawType());
  }

  public void testGetSubtype_baseClassWithNoTypeArgs() {
    class SingleGenericExtendsBase<T> extends Base {}