Sub Class a Backbone.View Sub Class & retain events

I have a generic subclass of Backbone.View which has a close event listener.

var GenericView = Backbone.View.extend({

    events : {
        "click .close" : "close"
    },

    close : function () {
        console.log("closing view");
    }

});

I want to subclass this generic class and add some new events. However the below will overwrite the super classes (above) event object. E.g.

var ImplementedView = new GenericView({

    // setting this will stop 'close' in Super Class from triggering
    events : {
        "click .submit" : "submit"
    }

}); 

How should I create a sub class, in this case ImplementedView and retain the events?

I have found one way to achieve this, by extending the event object when the child class is constructed. However I need to re-trigger this.delegateEvents(), which I am guessing is not good. Can any one comment on this?

var ImplementedView = new GenericView({

    initialize : function (options) {

        _.extend(this.events, {
            "click .submit" : "submit"
        });

        // re-attach events
        this.delegateEvents();
    }

});