refs #15317 [master] display title detail view

* retrieve solr field title_part_str

module/finc/src/finc/RecordDriver/SolrDefaultFincTrait.php

@@ -1348,4 +1348,15 @@ trait SolrDefaultFincTrait
         return isset($this->fields['kxp_id_str'])
             ? $this->fields['kxp_id_str'] : [];
     }
+
+    /**
+     * Return content of Solr field title_part_str if set
+     *
+     * @return mixed
+     */
+    public function getTitlePart()
+    {
+        return isset($this->fields['title_part_str']) ?
+            $this->fields['title_part_str'] : null;
+    }
 }