src/vs/workbench/browser/actions/layoutActions.ts/ToggleSidebarVisibilityAction/run
class ToggleSidebarVisibilityAction:	run(accessor: ServicesAccessor): void {
		const layoutService = accessor.get(IWorkbenchLayoutService);

		layoutService.setPartHidden(layoutService.isVisible(Parts.SIDEBAR_PART), Parts.SIDEBAR_PART);
	}