+ * Get WikiPage for the SearchUpdate $id using WikiPage::READ_LATEST
+ * and ensure using the same WikiPage object if there are multiple
+ * SearchEngine types.
+ *
+ * Returns null if a page has been deleted or is not found.
+ *
+ * @return WikiPage|null
+ */
+ private function getLatestPage() {
+ if ( !isset( $this->page ) ) {
+ $this->page = WikiPage::newFromID( $this->id, WikiPage::READ_LATEST );
+ }
+
+ return $this->page;
+ }
+
+ /**
+ * Get a normalized string representation of a title suitable for