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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.
No sample tests.
I can only suggest to unpublish it, or it will get retired anyway. Maybe the story is OK, but it doesn't excuse having such basic task itself.