private function prepSelectRelTable(Table &$relTable, array $callArgs) {
        foreach ($callArgs[0] as $method => $args) {
            if ($method === 'where') continue;
            if (method_exists($relTable, $method)) {
                $args = is_array($args) ? $args : array($args);
                $relTable = call_user_func_array(array($relTable, $method),
                        $args);
            }
        }
        return $relTable;
    }