Boon has many utility methods to convert objects into maps, lists, JSON, etc. It also has many collection utility methods. One such utility method is deepCopy, which will deep copy a list or set. Programmer as a way to clone Collection e.g. List, Set, ArrayList, HashSet or any other implementation. Or they write a lot of boiler plate code and spend a lot of time doing things to copy lists and sets. With Boon you can do deep copies without messing around with clone.