code: def get_slo_url(self):
          
          url = None
          idp_data = self.__settings.get_idp_data()
          if 'singleLogoutService' in idp_data.keys() and 'url' in idp_data['singleLogoutService']:
              url = idp_data['singleLogoutService']['url']
          return url
docs: Gets the SLO URL.
  
          :returns: An URL, the SLO endpoint of the IdP
          :rtype: string