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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.
do not use return at the end the method... Ruby will always return the last line of code.
Not an issue.
Description needs to be more clear.