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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.
Kotlin:
Sometimes the tests expext a space in front or at the end of the string sometimes they don't.
I do not get the rule. Is this really by intention? For me, the test suite contradicts itself.