def refund_line_items_xml(self, line_items):
        elem = ElementTree.Element(self.nodename)
        line_items_elem = ElementTree.Element('line_items')

        for item in line_items:
            adj_elem = ElementTree.Element('adjustment')
            adj_elem.append(Resource.element_for_value('uuid',
                item['adjustment'].uuid))
            adj_elem.append(Resource.element_for_value('quantity',
            item['quantity']))
            adj_elem.append(Resource.element_for_value('prorate', item['prorate']))
            line_items_elem.append(adj_elem)

        elem.append(line_items_elem)
        return elem

    def generate(self, amount):
        elem = ElementTree.Element(self.nodename)
        elem.append(Resource.element_for_value('number_of_unique_codes', amount))

        url = urljoin(self._url, '%s/generate' % (self.coupon_code, ))
        body = ElementTree.tostring(elem, encoding='UTF-8')

        response = self.http_request(url, 'POST', body, { 'Content-Type':
            'application/xml; charset=utf-8' })

        if response.status not in (200, 201, 204):
            self.raise_http_error(response)

        return Page.page_for_url(response.getheader('Location'))

def objects_for_push_notification(notification):
    """Decode a push notification with the given body XML.

    Returns a dictionary containing the constituent objects of the push
    notification. The kind of push notification is given in the ``"type"``
    member of the returned dictionary.

    """
    notification_el = ElementTree.fromstring(notification)
    objects = {'type': notification_el.tag}
    for child_el in notification_el:
        tag = child_el.tag
        res = Resource.value_for_element(child_el)
        objects[tag] = res
    return objects

def objects_for_push_notification(notification):
    """Decode a push notification with the given body XML.

    Returns a dictionary containing the constituent objects of the push
    notification. The kind of push notification is given in the ``"type"``
    member of the returned dictionary.

    NOTE: Push notification object attributes do not match up one-to-one with
    their Recurly Resource counterparts. Some attributes will be trimmed in this
    process.
    """
    notification_el = ElementTree.fromstring(notification)
    objects = {'type': notification_el.tag}
    for child_el in notification_el:
        tag = child_el.tag
        res = Resource.value_for_element(child_el)
        objects[tag] = res
    return objects

    attributes = (
        'message',
        'created_at',
    )

    @classmethod
    def from_element(cls, elem):
        new_note = Note()
        for child_el in elem:
            if not child_el.tag:
                continue
            setattr(new_note, child_el.tag, child_el.text)
        return new_note

Resource._learn_nodenames(locals().values())


def objects_for_push_notification(notification):
    """Decode a push notification with the given body XML.

    Returns a dictionary containing the constituent objects of the push
    notification. The kind of push notification is given in the ``"type"``
    member of the returned dictionary.

    """
    notification_el = ElementTree.fromstring(notification)
    objects = {'type': notification_el.tag}
    for child_el in notification_el:
        tag = child_el.tag
        res = Resource.value_for_element(child_el)

 def refund_open_amount_xml(self, amount_in_cents):
     elem = ElementTree.Element(self.nodename)
     elem.append(Resource.element_for_value('amount_in_cents',
         amount_in_cents))
     return elem