src/vs/workbench/browser/parts/panel/panelActions.ts/TogglePanelAction/run
class TogglePanelAction:	override async run(accessor: ServicesAccessor): Promise<void> {
		const layoutService = accessor.get(IWorkbenchLayoutService);
		layoutService.setPartHidden(layoutService.isVisible(Parts.PANEL_PART), Parts.PANEL_PART);
	}