diff --git a/core/lib/Drupal/Core/Form/FormStateInterface.php b/core/lib/Drupal/Core/Form/FormStateInterface.php
index 26485a0..6c6a979 100644
--- a/core/lib/Drupal/Core/Form/FormStateInterface.php
+++ b/core/lib/Drupal/Core/Form/FormStateInterface.php
@@ -192,7 +192,7 @@ public function &getStorage();
   public function &get($property);
 
   /**
-   * Sets a value to an arbitrary property.
+   * Sets value to an arbitrary property and saves it to the form state storage.
    *
    * @param string|array $property
    *   Properties are often stored as multi-dimensional associative arrays. If
@@ -204,6 +204,8 @@ public function &get($property);
    *   The value to set.
    *
    * @return $this
+   *
+   * @see \Drupal\Core\Form\FormStateInterface::getStorage()
    */
   public function set($property, $value);