https://www.php.net/manual/de/parle-parser.sigilname.php
PHP: Parle\Parser::sigilName - Manual
Retrieve a rule or token name
phpparleparsermanual
https://www.php.net/manual/it/parle-rparser.sigilname.php
PHP: Parle\RParser::sigilName - Manual
Retrieve a rule or token name
phpparlemanual