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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.
"My" description says (Assumptions):
This is a 4 kyu kata. If you are completely stuck, perhaps you should consider doing some of the katas closer to your current kyu.
If you still wish to proceed, then read the description carefully. It tells you how to extract the arguments from a function.