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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.
Not a suggestion
Agreed. And not just difficult for non-native English speakers, it's a terrible description for anybody regardless of English capabilities.
Your code should return an object, not a map.