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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.
What exactly is this question asking? It seems like there isn't enough information.
Careful! The tests have errors. Each one was set to return '67', so I had to change them to reflect the true string values in order for the function to work.