.../src/Functional/EntityResource/Feed/FeedResourceTestBase.php      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Feed/FeedResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Feed/FeedResourceTestBase.php
index 4669cef..d0b8b31 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Feed/FeedResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Feed/FeedResourceTestBase.php
@@ -23,6 +23,11 @@
   /**
    * {@inheritdoc}
    */
+  protected static $patchProtectedFieldNames = [];
+
+  /**
+   * {@inheritdoc}
+   */
   protected function setUpAuthorization($method) {
     switch ($method) {
       case 'GET':