diff --git a/core/lib/Drupal/Core/Access/AccessibleInterface.php b/core/lib/Drupal/Core/Access/AccessibleInterface.php
index eea600a..886ae1a 100644
--- a/core/lib/Drupal/Core/Access/AccessibleInterface.php
+++ b/core/lib/Drupal/Core/Access/AccessibleInterface.php
@@ -15,7 +15,7 @@
    * Checks data value access.
    *
    * @param string $operation
-   *   The operation to be performed.
+   *   The operation to be performed. For example: add, edit, delete.
    * @param \Drupal\Core\Session\AccountInterface $account
    *   (optional) The user for which to check access, or NULL to check access
    *   for the current user. Defaults to NULL.