_uibMsgHandler(evt) {
        // If there is a payload, we want to replace the slot - easiest done from the light DOM
        // if ( evt['detail'].payload ) {
        //     const el = document.getElementById(this.id)
        //     el.innerHTML = evt['detail'].payload
        // }
        // If there is a payload, we want to replace the VALUE
        // if ( evt['detail'].payload ) {
        //     const el = this.shadowRoot.getElementById('value')
        //     el.innerHTML = evt['detail'].payload
        // }
    }
Handle a `uibuilder:msg:_ui:update:${this.id}` custom event
@param {CustomEvent} evt uibuilder `uibuilder:msg:_ui:update:${this.id}` custom event evt.details contains the data