src/vs/workbench/browser/parts/titlebar/menubarControl.ts/CustomMenubarControl/currentDisableMenuBarAltFocus
class CustomMenubarControl:	private get currentDisableMenuBarAltFocus(): boolean {
		let settingValue = this.configurationService.getValue<boolean>('window.customMenuBarAltFocus');

		let disableMenuBarAltBehavior = false;
		if (typeof settingValue === 'boolean') {
			disableMenuBarAltBehavior = !settingValue;
		}

		return disableMenuBarAltBehavior;
	}