How update slick slider config ?

Hello,

After mounting slider component, I want update slider config for set padding center.

How to do it?

Code:
```
class PopupGallery extends Component {

constructor(props) {
super(props);

this.state = {
widthPadding: undefined
};

this._slider = null;
this._sliderItem = null;
}

shouldComponentUpdate(nextProps, nextState, nextContext) {
if (this.state.widthPadding != nextState.widthPadding) {
return true
}
return false;
}

componentDidMount() {
let widthSliderItem = ReactDOM.findDOMNode(this._sliderItem).getBoundingClientRect().width;

this.setState({
widthPadding: widthSliderItem * 0.1666666667 + 60
});
}

render() {
console.log(this.state.widthPadding);

let { className, title, items } = this.props;

let settings = {
dots: false,
speed: 500,
slidesToShow: 1,
slidesToScroll: 1,
draggable: true,
infinite: false,
centerMode: true,
centerPadding: this.state.widthPadding
};

return (

let popupGalleryWithStyles = withStyles(styles)(PopupGallery);

export default popupGalleryWithStyles;
```