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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.
Had a working solution that was bringing back errors for extensions on the strings - had to look at solutions to see that
using System.Linq;
needed to be added