src/vs/workbench/contrib/remote/browser/tunnelView.ts/TunnelPanelDescriptor/constructor
class TunnelPanelDescriptor:	constructor(viewModel: ITunnelViewModel, environmentService: IWorkbenchEnvironmentService) {
		this.ctorDescriptor = new SyncDescriptor(TunnelPanel, [viewModel]);
		this.remoteAuthority = environmentService.remoteAuthority ? environmentService.remoteAuthority.split('+')[0] : undefined;
	}