src/vs/workbench/browser/parts/auxiliarybar/auxiliaryBarActions.ts/ToggleAuxiliaryBarAction/constructor
class ToggleAuxiliaryBarAction:	constructor() {
		super({
			id: ToggleAuxiliaryBarAction.ID,
			title: { value: ToggleAuxiliaryBarAction.LABEL, original: 'Toggle Secondary Side Bar Visibility' },
			toggled: {
				condition: AuxiliaryBarVisibleContext,
				title: localize('secondary sidebar', "Secondary Side Bar"),
				mnemonicTitle: localize('secondary sidebar mnemonic', "Secondary Si&&de Bar"),
			},

			category: Categories.View,
			f1: true,
			menu: [
				{
					id: MenuId.LayoutControlMenuSubmenu,
					group: '0_workbench_layout',
					order: 1
				},
				{
					id: MenuId.MenubarAppearanceMenu,
					group: '2_workbench_layout',
					order: 2
				}
			]
		});
	}