PHP static analysis

core/modules/system/tests/modules/ajax_forms_test/src/Callbacks.php

@@ -69,7 +69,7 @@ public function imageButtonCallback($form, FormStateInterface $form_state) {
   /**
    * Ajax callback to confirm update a table row from outside the table.
    */
-  public function outsideTableCallback($form, FormStateInterface $form_state) {
+  public function outsideTableCallback($form, FormStateInterface $form_state): AjaxResponse {
     $response = new AjaxResponse();
     $response->addCommand(new HtmlCommand('#ajax_table_row_result', 'Outside table result'));
     return $response;
@@ -78,7 +78,7 @@ public function outsideTableCallback($form, FormStateInterface $form_state) {
   /**
    * Ajax callback to confirm update a table row from inside the table.
    */
-  public function insideTableCallback($form, FormStateInterface $form_state) {
+  public function insideTableCallback($form, FormStateInterface $form_state): AjaxResponse {
     $response = new AjaxResponse();
     $response->addCommand(new HtmlCommand('#ajax_table_row_result', 'Inside table result'));
     return $response;