CI 4 remove index.php

i've got apache 2.4 runnig on slackware -current and no problem getting rid of index.php in url.

From memory getting rid of index.php in url was quite prominent in docs , i can't quickly find it but its in docs somewhere
app/config/App.php

Code:

/*
    |--------------------------------------------------------------------------
    | Index File
    |--------------------------------------------------------------------------
    |
    | Typically this will be your index.php file, unless you've renamed it to
    | something else. If you are using mod_rewrite to remove the page set this
    | variable so that it is blank.
    |
    */
    public $indexPage = '';