src/vs/workbench/contrib/extensions/browser/extensionsQuickAccess.ts/openExtensionsViewlet
async function openExtensionsViewlet(paneCompositeService: IPaneCompositePartService, search = ''): Promise<void> {
	const viewlet = await paneCompositeService.openPaneComposite(VIEWLET_ID, ViewContainerLocation.Sidebar, true);
	const view = viewlet?.getViewPaneContainer() as IExtensionsViewPaneContainer | undefined;
	view?.search(search);
	view?.focus();
}