Nova Launcher is a powerful and elegant launcher that lets you customize aspects of your home screen, icons, and folders. One of the features that stands out .... builds upon the strengths of Java but has additional power features inspired by languages like ... InvokerHelper class Main extends Script { int power(int n) { 2** n} (1) def run() { println 'Hello' ... It is also important as a way to document the class design. ... In that case, all super traits must be declared in the implements