import * as React from "react" ; import { ConfigurableCreateInfo , ContentControl } from "@itwin/appui-react" ; import "./SampleContentControl.scss" ; import { Centered } from "@itwin/core-react" ; export class SampleContentControl extends ContentControl { constructor ( info , options ) { super ( info , options ) ; this . reactNode = ( < div className = "test-content-container" > < Centered > Hello World ! < /Centered> < /div>); } }