code: function WebView() {
    this.tab = null;
    this.handler = null;
    this.open = this.open.bind(this);
    this.handleFirstLoadEnd = this.handleFirstLoadEnd.bind(this);
    this.handleLoadError = this.handleLoadError.bind(this);
    this.handleExit = this.handleExit.bind(this);
    this.clearEvents = this.clearEvents.bind(this);
    this.close = this.close.bind(this);
  }
docs: Fallback to old WebView where SFSafariViewController is not supported