How to use the @material/toolbar.MDCToolbar function in @material/toolbar

public componentDidMount() {
    super.componentDidMount();
    if (this.control) {
      this.MDComponent = new MDCToolbar(this.control);
      this.MDComponent.listen('MDCToolbar:change', this.onChange);
    }
  }

componentDidMount() {
    this.MDComponent = new MDCToolbar(this.control);
    this.MDComponent.listen('MDCToolbar:change', this._onChange);
  }
  componentWillUnmount() {

mounted() {
        this.mdcToolbar = new MDCToolbar(this.$el)
    },
    destroyed() {

componentDidMount() {
    this.MDComponent = new _toolbar.MDCToolbar(this.control);
    this.MDComponent.listen('MDCToolbar:change', this._onChange);
  }