code: def remove_all_servers(self):
          
  
          for server_id in list(self._servers.keys()):
              self.remove_server(server_id)
docs: Remove all registered WBEM servers from the subscription manager. This
          also unregisters listeners from these servers and removes all owned
          indication subscriptions, owned indication filters, and owned listener
          destinations.
  
          Raises:
  
              Exceptions raised by :class:`~pywbem.WBEMConnection`.