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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.
I believe that this guy has been coding complex projects for ages that he has forgotten the definition of a simple problem and a simple solution.
Nevertheless, this is very clever to me...