Set a package name in Laravel 5.1

I have tried to set a package name in Laravel 5.1. For some reason I cannot find anything that works for me. What I looking for is to reproduce the same functionality as from the Laravel 4.2:

$this->package('Some/Package', 'name');

Is there anything similiar to this? Could not find anything on their docs, under "package development". Thanks!

via Chebli Mohamed