In the doc (version 7) i don't find a sort() method for List, but in the designer a sort method for List is available, so I can call x.sort(null).
Questions:
(a) Is that save to use and supported in future versions even it is not documented?
(b) is there an easy way to specify a comparator (java.util.Comparator) for a private type, e. g. a data class of my project?