diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigDependencyManager.php b/core/lib/Drupal/Core/Config/Entity/ConfigDependencyManager.php
index ce053e1..a762de9 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigDependencyManager.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigDependencyManager.php
@@ -291,8 +291,25 @@ public function setData(array $data) {
    *
    * @param $name
    *   The configuration dependency name.
-   * @param $dependencies
-   *   The configuration dependencies.
+   * @param array $dependencies
+   *   The configuration dependencies. The array is structured like this:
+   *   @code
+   *   array(
+   *     'config => array(
+   *       // An array of configuration entity object names.
+   *     ),
+   *     'content => array(
+   *       // An array of content entity configuration dependency names. The default
+   *       // format is "ENTITY_TYPE_ID:BUNDLE:UUID".
+   *     ),
+   *     'module' => array(
+   *       // An array of module names.
+   *     ),
+   *     'theme' => array(
+   *       // An array of theme names.
+   *     ),
+   *   );
+   *   @endcode
    *
    * @return $this
    */