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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 would test it using method assertNotNull();
Now solution passes test even without cheking for null. You can see this in solutions
array called EMPTY_STRING_LIST
bad test for null input
oh man!
clever
nice solution with beat()