Usage
You use a static method by writing the name of the class where it is
defined followed by . and the method name.
class StuffDoer {
    static void doStuff() {
        IO.println("Doing stuff");
    }
}
class StuffDoer {
    static void doStuff() {
        IO.println("Doing stuff");
    }
}
void main() {
    StuffDoer.doStuff();
}