src/vs/workbench/contrib/extensions/browser/extensionsViews.ts/ExtensionsListView/isSortInstalledExtensionsQuery
class ExtensionsListView:	static isSortInstalledExtensionsQuery(query: string, sortBy?: string): boolean {
		return (sortBy !== undefined && sortBy !== '' && query === '') || (!sortBy && /^@sort:\S*$/i.test(query));
	}