问无法覆盖converse.js核心函数

EN

require(['converse'], function (converse) {
    "use strict";

    converse.plugins.add('pluginName', {
        overrides: {
            onConnected: function () {
                this._super.onConnected();
            },
            ChatBoxView: {                
                showMessage: function (attrs) {                    
                    this._super.showMessage(attrs);
                }
            }
        }
    });

    converse.initialize({
        bosh_service_url: 'http://myurl.com/http-bind/',
        i18n: locales.en,
        show_controlbox_by_default: true,
        roster_groups: true,
        keepalive: true,
        jid: 'admin@myurl.com',
        message_carbons: true,
        play_sounds: true,
        anonymous: false,
        allow_logout: false,
        authentication: 'prebind',
        prebind_url: '/prebind',
        auto_list_rooms: true
    });
});