def METHOD_NAME(self):
    operation = map_ops.map_get_by_value_range(
        self.cdt_map_bin, [1, aerospike.null()], [1, aerospike.CDTInfinite()], aerospike.MAP_RETURN_KEY
    )
    result = get_list_result_from_operation(self.as_connection, self.cdt_key, operation, self.cdt_map_bin)
    assert set(result) == set(("b", "c", "d"))