code: def list_connected_devices(self, **kwargs):
          
          # TODO(pick one of these)
          filter_or_filters = 'filter' if 'filter' in kwargs else 'filters'
          kwargs.setdefault(filter_or_filters, {}).setdefault('state', {'$eq': 'registered'})
          kwargs = self._verify_sort_options(kwargs)
          kwargs = self._verify_filters(kwargs, Device, True)
          api = self._get_api(device_directory.DefaultApi)
          return PaginatedResponse(api.device_list, lwrap_type=Device, **kwargs)
docs: List connected devices.
  
          Example usage, listing all registered devices in the catalog:
  
          .. code-block:: python
  
              filters = {
                  'created_at': {'$gte': datetime.datetime(2017,01,01),
                                 '$lte': datetime.datetime(2017,12,31)
                                }
              }
              devices = api.list_connected_devices(order='asc', filters=filters)
              for idx, device in enumerate(devices):
                  print(device)
  
              ## Other example filters
  
              # Directly connected devices (not via gateways):
              filters = {
                  'host_gateway': {'$eq': ''},
                  'device_type': {'$eq': ''}
              }
  
              # Devices connected via gateways:
              filters = {
                  'host_gateway': {'$neq': ''}
              }
  
              # Gateway devices:
              filters = {
                  'device_type': {'$eq': 'MBED_GW'}
              }
  
  
          :param int limit: The number of devices to retrieve.
          :param str order: The ordering direction, ascending (asc) or
              descending (desc)
          :param str after: Get devices after/starting at given `device_id`
          :param filters: Dictionary of filters to apply.
          :returns: a list of connected :py:class:`Device` objects.
          :rtype: PaginatedResponse