core/modules/rest/src/Annotation/RestResource.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/core/modules/rest/src/Annotation/RestResource.php b/core/modules/rest/src/Annotation/RestResource.php
index 82269db..0af11a8 100644
--- a/core/modules/rest/src/Annotation/RestResource.php
+++ b/core/modules/rest/src/Annotation/RestResource.php
@@ -38,4 +38,11 @@ class RestResource extends Plugin {
    */
   public $label;
 
+  /**
+   * The serialization class to deserialize serialized data into.
+   *
+   * @var string (optional)
+   */
+  public $serialization_class;
+
 }