code: function unregister() {
      if (!applicationCurrent) {
          return;
      }
      applicationCurrent.stop();
  
      EVENTS.forEach(function (event) {
          process.removeListener(event, currentHandlers[event]);
      });
  
      applicationCurrent = null;
      currentHandlers = {};
  }
docs: Unregister current application and remove all corrsponding listeners
  
  @return undefined