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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.
but anyway, as far as I remember, there is no such testcase at all...
I suppose it's doesn't metter, since trailing spaces shoud be completely ignored
I suggest test:
. .should beE E(i.e. some more trailing whitespaces at the end of input)