public void init(JCommander commander, PrintWriter out) {
        this.commander = Objects.requireNonNull(commander);
        this.out = Objects.requireNonNull(out);
    }
Abstract class for command actions.

@author Nico Bergemann <barracuda415 at yahoo.de>
disunity-cli/src/main/java/info/ata4/disunity/cli/command/Command.java