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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.
I think I am pretty close, passing 5, but still failing two when going to submit. Basic test button passes. Not sure what "should be able to handle repeated properties" means, any ideas?