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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 don't know who approved your translation... but there is an issue posted by @unnammed in the kata discourses since there are errors in random tests. I don't enough know Scala to correct the problem. I don't even know howw it can have been approved due to this error. Mysterious! Could you fix your translation?