To use this extension, require it in Composer:
composer require --dev ssch/typo3-debug-dump-pass
To gain better insights for Tools like https://github.com/sabbelasichon/typo3-rector or https://github.com/sascha-egerer/phpstan-typo3 the extension dumps a XML file in your var/cache/ folder of your TYPO3 installation.