src/vs/workbench/contrib/remote/browser/tunnelView.ts/TunnelItem/portTooltip
class TunnelItem:	get portTooltip(): string {
		const isAdd = this.tunnelType === TunnelType.Add;
		if (!isAdd) {
			return `${this.name ? nls.localize('remote.tunnel.tooltipName', "Port labeled {0}. ", this.name) : ''}`;
		} else {
			return '';
		}
	}