src/vs/workbench/contrib/remote/browser/tunnelView.ts/TunnelPanel/hasOpenLinkModifier
class TunnelPanel:	private hasOpenLinkModifier(e: MouseEvent): boolean {
		const editorConf = this.configurationService.getValue<{ multiCursorModifier: 'ctrlCmd' | 'alt' }>('editor');

		let modifierKey = false;
		if (editorConf.multiCursorModifier === 'ctrlCmd') {
			modifierKey = e.altKey;
		} else {
			if (isMacintosh) {
				modifierKey = e.metaKey;
			} else {
				modifierKey = e.ctrlKey;
			}
		}
		return modifierKey;
	}