A job executed in a @see \io\vertx\jphp\ext\shell\system\JobController, grouping one or several process.<p/>
The job life cycle can be controlled with the @see \io\vertx\jphp\ext\shell\system\Job::run, @see \io\vertx\jphp\ext\shell\system\Job::resume and @see \io\vertx\jphp\ext\shell\system\Job::suspend and @see \io\vertx\jphp\ext\shell\system\Job::interrupt methods.