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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.
You may be right, but I like to avoid boilerplate whenever possible. In my opinion it enhances readability to use situational syntactic sugar like this: because it can only be used in certain circumstances, its use highlights that you are in those circumstances.
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