}

    @Override
    public String toString() {
      return bounds.equals(ImmutableList.of(Object.class))
          ? name
          : name + " extends " + getTypesString(bounds);
    }
  }

  private static String getTypesString(List<? extends Type> types) {
    List<String> names = transform(types, SIMPLE_NAME_GETTER);
    return Joiner.on(", ").join(names);
  }