This is the default example configuration of mariadb provided by MariaDB. This config file was generated by MariaDB running on Ubuntu 20.04.
It is located under: /etc/insserv.conf.d/mariadb
$database mysql
Download the raw file with wget or curl
wget -O mariadb.example http://exampleconfig.com/static/raw/mariadb/ubuntu20.04/etc/insserv.conf.d/mariadb
curl http://exampleconfig.com/static/raw/mariadb/ubuntu20.04/etc/insserv.conf.d/mariadb > mariadb.example
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