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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Yes, I agree with you
This comment is hidden because it contains spoiler information about the solution
I thinks it's better if your code is out of the return, because here is not really clear and maintainable.