Loading collection data...
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.
"Invalid user type. Must be one of: " + string.Join(", ", validUserTypes) is a code repetition.
the second won t be used exceptafter a bad evolution with adding a new type that is not considered in switch. So the second error would rather be a not implemented exception.