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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.
risky, you may exceed int size at some point.
is it be working if someone put utf8 character? I know this is not a part of this task, just want to know, that you have to extend this pattern in this case to make it working?