docs: def _get_notification(self, email, token):
          ''' Consulta o status do pagamento '''        
          url = u'{notification_url}{notification_code}?email={email}&token={token}'.format(
              notification_url=self.notification_url,
              notification_code=self.notification_code,
              email=email,
              token=token)
          req = requests.get(url)
          if req.status_code == 200:
              self.xml = req.text
              logger.debug( u'XML com informacoes da transacao recebido: {0}'.format(self.xml) )
              transaction_dict = xmltodict.parse(self.xml)
              # Validar informações recebidas
              transaction_schema(transaction_dict)
              self.transaction = transaction_dict.get('transaction')
          else:
              raise PagSeguroApiException(
                          u'Erro ao fazer request para a API de notificacao:' + 
                          ' HTTP Status=%s - Response: %s' % (req.status_code, req.text))