diff --git a/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php b/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
index c393b2e..b6ffd63 100644
--- a/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
+++ b/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
@@ -636,7 +636,7 @@ function render_items($items) {
   /**
    * Return an array of items for the field.
    */
-  function get_items($values) {
+  protected function getItems($values) {
     $original_entity = $this->get_entity($values);
     if (!$original_entity) {
       return array();
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
index bc8dfff..78569c4 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
@@ -1110,7 +1110,7 @@ function render($values) {
    */
   function advanced_render($values) {
     if ($this->allow_advanced_render() && method_exists($this, 'render_item')) {
-      $raw_items = $this->get_items($values);
+      $raw_items = $this->getItems($values);
       // If there are no items, set the original value to NULL.
       if (empty($raw_items)) {
         $this->original_value = NULL;
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/PrerenderList.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/PrerenderList.php
index 1dfa85b..7dbef0a 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/PrerenderList.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/PrerenderList.php
@@ -99,7 +99,7 @@ function render_items($items) {
    * is to be made. Additionally, items that might be turned into tokens
    * should also be in this array.
    */
-  function get_items($values) {
+  protected function getItems($values) {
     $field = $this->get_value($values);
     if (!empty($this->items[$field])) {
       return $this->items[$field];