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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.
You only check there is an equal number of opening and closing brackets, but it is not enough: ")(" isn't correct but your code cannot detect it.
Also, please use markdown tags to format your code or it's very discomfortable to read, see: how-to-format-code-in-markdown.