<argument type="collection" />

Well, it seems we can't useabstract_arg() here, or we should add a newcollection_abstract_arg() or something else to set[] as default.

The tests can be solved by setting[] for both collection arguments.

@AhmedRaafat14 I afraid we need to change it again to[], // Translator paths, sorry, same for Twig paths argument (same for both commands), thanks!

I was I did that it fixes the tests then I thought it might be me mistaken.

Thank you for confirming that I will update the PR ASAP.

@javiereguiluz@yceruto
To fix the testing I had to revert back everycollection argument to an empty array[] with a comment.

Also even for theconsole.command.translation_debug the unit tests failed with usingabstract_arg('twig.default_path') it throws an exception that it expects string but got anAbstractArgument.
I will give it sometime tomorrow to try to fix it :) if I can. (in seperate PR for sure)

What do you think?

Exception Example:

Symfony\Component\DependencyInjection\Exception\InvalidParameterTypeException: Invalid definition for service "console.command.translation_debug": argument 5 of "Symfony\Bundle\FrameworkBundle\Command\TranslationDebugCommand::__construct" accepts "string", "Symfony\Component\DependencyInjection\Argument\AbstractArgument" passed.