diff --git a/core/lib/Drupal/Core/Entity/EntityBCDecorator.php b/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
index e34531d..a23f7e4 100644
--- a/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
+++ b/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
@@ -219,6 +219,7 @@ public function access($operation = 'view', \Drupal\user\Plugin\Core\Entity\User
    * Forwards the call to the decorated entity.
    */
   public function get($property_name) {
+    // Ensure this works with not yet defined fields.
     if (!isset($this->definitions[$property_name])) {
       return $this->__get($property_name);
     }
@@ -229,6 +230,7 @@ public function get($property_name) {
    * Forwards the call to the decorated entity.
    */
   public function set($property_name, $value) {
+    // Ensure this works with not yet defined fields.
     if (!isset($this->definitions[$property_name])) {
       return $this->__set($property_name, $value);
     }