* </p>
     *
     * @param elements The elements to add
     */
    @Incubating
    @SuppressWarnings("unchecked")
    // TODO Use @SafeVarargs and make method final
    void appendAll(T... elements);

    /**
     * Adds zero or more elements to the property value.
     *
     * <p>The given iterable will be queried when the value of this property is queried.
     *
     * <p>

        objectFactory().listProperty(T::class.java).apply {
            if (values.isNotEmpty()) {
                uncheckedNonnullCast<CollectionPropertyInternal<T, Collection<T>>>(this).appendAll(*values)
            }
        }

    private
    inline fun <reified T : Any> propertyOf(value: T) =
        objectFactory().property(T::class.java).apply {
            set(value)
        }

	// string "u"
	o = append(o, 0x82, 0xa1, 0x75)
	if z.Update == nil {
		o = msgp.AppendNil(o)
	} else {
		o, err = z.Update.MarshalMsg(o)
		if err != nil {
			err = msgp.WrapError(err, "Update")
			return
		}
	}
	// string "f"
	o = append(o, 0xa1, 0x66)
	if z.Final == nil {
		o = msgp.AppendNil(o)
	} else {
		o, err = z.Final.MarshalMsg(o)
		if err != nil {