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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 don't want to use attr_accessor :full_name here. It does nothing because the full_name method already acts as a reader, and you can't use it for assignment.