Percona tuning primer script

Hello, As I was going through the database installation script located in src/modules/stack/install/ at the end I noticed that a file named is downloaded. I searched the project files to find the command that executes the script but nothing. in the link you mention that mysqltuner is a bit buggy sometimes and does not work properly. So, what I really want to ask, is it up to us to run the or mysqtuner? Am I missing something here?

Thank you for your time.