code: function AppManager(service) {
      EventEmitter.call(this);
      //
      if (!(service instanceof Service)) {
          throw new Error('`service` argument must be instanceof Service');
      }
      /**
       * @name AppManager#service
       * @instance
       * @readonly
       * @type {Service}
       */
      this.service = service;
      this.apps    = [];
  }
docs: emitted each time an app which implements {@link AppInterface} is instantiated through this `AppManager`.
  @event AppManager#build-app
  @property {App} app
   
  Creates and manages individual applications which implement {@link AppInterface}
  @constructor
  @extends EventEmitter
  
  @param {Service} service
  @emits AppManager#build-app