get export filename base from profile title

src/Application/Model/ExportBase.php

@@ -98,6 +98,14 @@ abstract class ExportBase implements QueryBase
         return $renderer->getContent($rows, $fieldnames);
     }
 
+    /**
+     * @return string
+     */
+    public function getExportFilenameBase() : string
+    {
+        return $this->getTitle();
+    }
+
     /**
      * @param $format
      *