class Quickbooks::Service::Payment

def void(entity, options = {})
  raise Quickbooks::InvalidModelException.new(entity.errors.full_messages.join(',')) unless entity.valid?
  xml = entity.to_xml_ns(options)
  url = "#{url_for_resource(model::REST_RESOURCE)}?include=void"
  response = do_http_post(url, valid_xml_document(xml), {})
  if response.code.to_i == 200
    model.from_xml(parse_singular_entity_response(model, response.plain_body))
  else
    false
  end
end