CI4 Customizing Logger filename

Hi,
I am a real fan of CI3 for years ...   and recently decided to create a new project using CI4 .
Couldn't find a way to have multiple log files....
I usually create my own log helper , and have tricks that I like to customize on the logging.
One of the important one , is having the ability to give the logger a different log file name .
So instead of having one log :   log-YYY-MM-DD.log    , I'd like to have :
log-billing-YYY-MM-DD.log
log-accounts-YYY-MM-DD.log
log-orders-YYY-MM-DD.log
log-products-YYY-MM-DD.log
etc ....

Can't find a way to do it.

I saw this post ,   https://forum.codeigniter.com/thread-78665.html
AngelRodriguez is showing how to modify the log path

For instance :

PHP Code:

use Config\Logger as LoggerConfig;
use CodeIgniter\Log\Logger as Logger;
function lg($level, $message) {

        // log with default config
        log_message('critical', 'test {file} {line}');

        // log with custom
        $loggerConfig = new LoggerConfig();

        // or just edit path parameter
        $customPath = 'logs/otherfolder/';
        $loggerConfig->handlers['CodeIgniter\Log\Handlers\FileHandler']['path'] = WRITEPATH . $customPath;

        // you need to create the folder manually first
        
        //then create new instance with the config
        $logger = new Logger($loggerConfig);
        $logger->log('critical', 'test other folder {file} {line}'); 

}


but I want also to modify the filename .... 


Create your own FileHandler based on (extends) system/Log/Handlers/FileHandler.php,
and configure to use it in app/Config/Logger.php.

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