src/vs/workbench/contrib/remote/browser/remoteExplorer.ts/OnAutoForwardedAction/openPreviewChoice
class OnAutoForwardedAction:	private openPreviewChoice(tunnel: RemoteTunnel): IPromptChoice {
		const address = makeAddress(tunnel.tunnelRemoteHost, tunnel.tunnelRemotePort);
		return {
			label: OpenPortInPreviewAction.LABEL,
			run: () => OpenPortInPreviewAction.run(this.remoteExplorerService.tunnelModel, this.openerService, this.externalOpenerService, address)
		};
	}