This method dequeues and injects events until it has arrived at the time index. If
no events are ready (based on the time index), this method does nothing.
@return {Boolean} True if there is more to do; false if not (at least for now).
function () {
        var me = this,
            animations = me.pauseForAnimations && me.attachTo.Ext.fx.Manager.items,
            eventDescriptor;

        while ((eventDescriptor = me.peekEvent()) !== null) {
            if (animations && animations.getCount()) {
                return true;
            }
            
            if (eventDescriptor.keyframe) {
                if (!me.processKeyFrame(eventDescriptor)) {
                    return false;
                }
                me.nextEvent(eventDescriptor);
            } else if (eventDescriptor.ts <= me.getTimeIndex() &&
                       me.fireEvent('beforeplay', me, eventDescriptor) !== false &&
                       me.playEvent(eventDescriptor)) {
                if(window.__x && eventDescriptor.screenshot) {
                     __x.poll.sendSyncRequest({cmd: 'screenshot'});
                }       
                me.nextEvent(eventDescriptor);
            } else {
                return true;
            }
        }

        me.stop();
        return false;
    }