return; // okay to say <?> is anything
        }
        WildcardType toWildcardType = (WildcardType) to;
        Type[] fromUpperBounds = fromWildcardType.getUpperBounds();
        Type[] toUpperBounds = toWildcardType.getUpperBounds();
        Type[] fromLowerBounds = fromWildcardType.getLowerBounds();
        Type[] toLowerBounds = toWildcardType.getLowerBounds();
        checkArgument(

          return; // okay to say <?> is anything
        }
        WildcardType toWildcardType = (WildcardType) to;
        Type[] fromUpperBounds = fromWildcardType.getUpperBounds();
        Type[] toUpperBounds = toWildcardType.getUpperBounds();
        Type[] fromLowerBounds = fromWildcardType.getLowerBounds();
        Type[] toLowerBounds = toWildcardType.getLowerBounds();
        checkArgument(

      if (lowerBounds.length == 1) {
        return supertypeOf(newArrayType(lowerBounds[0]));
      } else {
        Type[] upperBounds = wildcard.getUpperBounds();
        checkArgument(upperBounds.length == 1, "Wildcard should have only one upper bound.");
        return subtypeOf(newArrayType(upperBounds[0]));
      }
    }

    assertThat(actual.getLowerBounds())
        .asList()
        .containsExactlyElementsIn(asList(expected.getLowerBounds()))
        .inOrder();
    assertThat(actual.getUpperBounds())
        .asList()
        .containsExactlyElementsIn(asList(expected.getUpperBounds()))
        .inOrder();
  }

  private static class WithTypeVariable {

    @SuppressWarnings("unused")
    <T> void withoutBound(List<T> list) {}

    assertThat(actual.getLowerBounds())
        .asList()
        .containsExactlyElementsIn(asList(expected.getLowerBounds()))
        .inOrder();
    assertThat(actual.getUpperBounds())
        .asList()
        .containsExactlyElementsIn(asList(expected.getUpperBounds()))
        .inOrder();
  }

  private static class WithTypeVariable {

    @SuppressWarnings("unused")
    <T> void withoutBound(List<T> list) {}

        }
        if (type instanceof WildcardType) {
            final WildcardType wildcardType = WildcardType.class.cast(type);
            final Type[] types = wildcardType.getUpperBounds();
            return getRawClass(types[0]);
        }
        if (type instanceof GenericArrayType) {
            final GenericArrayType genericArrayType = GenericArrayType.class.cast(type);