src/vs/workbench/contrib/remote/browser/remoteExplorer.ts/ForwardedPortsView/updateActivityBadge
class ForwardedPortsView:	private async updateActivityBadge() {
		if (this._activityBadge) {
			this._activityBadge.dispose();
		}
		if (this.remoteExplorerService.tunnelModel.forwarded.size > 0) {
			this._activityBadge = this.activityService.showViewActivity(TUNNEL_VIEW_ID, {
				badge: new NumberBadge(this.remoteExplorerService.tunnelModel.forwarded.size, n => n === 1 ? nls.localize('1forwardedPort', "1 forwarded port") : nls.localize('nForwardedPorts', "{0} forwarded ports", n))
			});
		}
	}