code: function (callback) {
      var cozyLight = require('./cozy-light');
      if (cozyLight.getStatus() === 'started') {
        cozyLight.setStopped();
        logger.info('Stopping apps...');
        return applicationHelpers.stopAll(function (appErr) {
          if (appErr) {
            logger.error('An error occurred while stopping applications');
            logger.raw(appErr);
          }
  
          logger.info('Stopping plugins...');
          pluginHelpers.stopAll(function (pluginErr) {
            if (pluginErr) {
              logger.error('An error occurred while stopping plugins');
              logger.raw(pluginErr);
            }
  
            logger.info('Stopping server...');
            var timeout = nodeHelpers.throwTimeout(
                'main server is too slow to stop...', 5000);
  
            mainAppHelper.stop(function(){
              clearTimeout(timeout);
              logger.info('\t' + symbols.ok + '\tmain server');
              nodeHelpers.invoke(callback);
            });
          });
        });
      }
      logger.debug('Apps already stopped');
      return nodeHelpers.invoke(callback);
    }
docs: Stop all running applications.
  
  @param {Function} callback Termination.