private function getFunctionyTokenKinds()
    {
        static $tokens = [
            T_ARRAY,
            T_ECHO,
            T_EMPTY,
            T_EVAL,
            T_EXIT,
            T_INCLUDE,
            T_INCLUDE_ONCE,
            T_ISSET,
            T_LIST,
            T_PRINT,
            T_REQUIRE,
            T_REQUIRE_ONCE,
            T_UNSET,
            T_VARIABLE,
        ];

        return $tokens;
    }