final Map<TypeVariable<?>, Type> map) {
        assertArgumentNotNull("constructor", constructor);
        assertArgumentNotNull("map", map);

        return createParameterizedClassDesc(constructor.getGenericParameterTypes()[index], map);
    }

    /**
     * Creates and returns a {@link ParameterizedClassDesc} that represents the type of the method argument.
     *
     * @param method

     */
    public static Class<?> getElementTypeOfCollectionFromParameterType(final Method method, final int position) {
        assertArgumentNotNull("method", method);

        final Type[] parameterTypes = method.getGenericParameterTypes();
        return GenericsUtil.getRawClass(GenericsUtil.getElementTypeOfCollection(parameterTypes[position]));
    }

    /**

        final Map<TypeVariable<?>, Type> map = GenericsUtil.getTypeVariableMap(Hoge.class);

        Method method = Hoge.class.getMethod("foo", Object.class);
        assertThat(GenericsUtil.getActualClass(method.getGenericParameterTypes()[0], map), is(sameClass(Integer.class)));
        assertThat(GenericsUtil.getActualClass(method.getGenericReturnType(), map), is(sameClass(Long.class)));

        method = Hoge.class.getMethod("array");