I try to add some new event dispathcer to Graph view (click on graph bar)

odoo.define('myaddon.upgrades', function (require) {
    "use strict";   
    var GraphController = require('web.GraphController');
    GraphController.include({
        events: _.extend({}, GraphController.prototype.events, {
            'click rect.nv-bar': '_onBarClick',
        }),
        _onBarClick: function(event){
            console.log('bar clicked');
        },
    });
});

But _onBarClick never called. What's wrong? During debug GraphController I even can see, that it really has events list including its default events and my added event too. Also if I add dispatcher to rect.nv-bar with JQuery at Chrome debug console, as

$('rect.nv-bar').click(function(e){console.log('bar clicked');});

it works too. But something prevents it from run the way I quoted above. Maybe something inside the nvd3? How can I test it?