### Question:
Commander implements CommanderExtension { @Override public void commanderReady() { LOGGER.info("[Commander] " + unit.getName() + " is ready!"); } Commander(CommanderUnit commanderUnit); @Override void commanderReady();  }### Answer:
@Test public void commanderReady() { final Commander commander = new Commander(new CommanderUnit("CommanderUnitTest")); commander.commanderReady(); }