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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.
Tests updated in fork by @cwps
But it makes it easier to read.
I don't believe this is OOP. This uses an object, but that's not what OOP really means.