Helper function that goes to a view-sequence either by scrolling
or immediately without any scrolling animation.
function _goToSequence(viewSequence, next, noAnimation) {
        if (noAnimation) {
            this._viewSequence = viewSequence;
            this._scroll.springPosition = undefined;
            _updateSpring.call(this);
            this.halt();
            this._scroll.scrollDelta = 0;
            _setParticle.call(this, 0, 0, '_goToSequence');
            this._scroll.scrollDirty = true;
        }
        else {
            this._scroll.scrollToSequence = viewSequence;
            this._scroll.scrollToRenderNode = viewSequence.get();
            this._scroll.ensureVisibleRenderNode = undefined;
            this._scroll.scrollToDirection = next;
            this._scroll.scrollDirty = true;
        }
    }