code: def get_resource_area_by_host(self, area_id, host_id):
          
          route_values = {}
          if area_id is not None:
              route_values['areaId'] = self._serialize.url('area_id', area_id, 'str')
          query_parameters = {}
          if host_id is not None:
              query_parameters['hostId'] = self._serialize.query('host_id', host_id, 'str')
          response = self._send(http_method='GET',
                                location_id='e81700f7-3be2-46de-8624-2eb35882fcaa',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('ResourceAreaInfo', response)
docs: GetResourceAreaByHost.
          [Preview API]
          :param str area_id:
          :param str host_id:
          :rtype: :class:`<ResourceAreaInfo> <azure.devops.v5_0.location.models.ResourceAreaInfo>`