src/vs/workbench/contrib/remote/browser/tunnelView.ts/IconColumn/project
class IconColumn:	project(row: ITunnelItem): ActionBarCell {
		if (row.tunnelType === TunnelType.Add) {
			return emptyCell(row);
		}

		const icon = row.processDescription ? forwardedPortWithProcessIcon : forwardedPortWithoutProcessIcon;
		let tooltip: string = '';
		if (row instanceof TunnelItem) {
			tooltip = `${row.iconTooltip} ${row.tooltipPostfix}`;
		}
		return {
			label: '', icon, tunnel: row, editId: TunnelEditId.None, tooltip
		};
	}