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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.
This function is not an error handler nor is it designed to scale.
This is neither clever, nor good practice. It might work for the given problem but every addition to this code will break it or force the person to rewrite it the normal way. -rep