* </p>
     *
     * @return an array of {@link ParameterizedClassDesc} representing the type arguments
     * @see ParameterizedType#getActualTypeArguments()
     */
    ParameterizedClassDesc[] getArguments();

  final Type capture() {
    Type superclass = getClass().getGenericSuperclass();
    checkArgument(superclass instanceof ParameterizedType, "%s isn't parameterized", superclass);
    return ((ParameterizedType) superclass).getActualTypeArguments()[0];
  }

 *
 * {@snippet :
 * new TypeVisitor() {
 *   protected void visitParameterizedType(ParameterizedType t) {
 *     visit(t.getOwnerType());
 *     visit(t.getActualTypeArguments());
 *   }
 *   protected void visitGenericArrayType(GenericArrayType t) {
 *     visit(t.getGenericComponentType());
 *   }
 *   protected void visitTypeVariable(TypeVariable<?> t) {

  }

  private static <T> Type aWildcardType() {
    ParameterizedType parameterizedType =
        (ParameterizedType) new TypeCapture<List<? extends T>>() {}.capture();
    return parameterizedType.getActualTypeArguments()[0];
  }