r() {
            return (
              <header>
                <div className="container">
                  JSONoid Schema Viewer
                </div>
              </header>
            );
          }

          function Body() {
            const [schema, setSchema] = useState('')
            const [json, setJson] = useState(undefined);
            useEffect(() => {
              if (schema) {
                const response = fetch(schema)
                  .then(x => x.json())
                  .th