From 93b7eb8eea9d562cb9eff137ca71c5d5d9c2e394 Mon Sep 17 00:00:00 2001
From: Pieter Frenssen <pieter@frenssen.be>
Date: Sat, 15 Aug 2020 20:03:02 +0300
Subject: [PATCH] Document why we are doing an interface check before adding
 cacheability metadata.

---
 src/Event/AccessEventBase.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Event/AccessEventBase.php b/src/Event/AccessEventBase.php
index 740864ce8..520c24cb8 100644
--- a/src/Event/AccessEventBase.php
+++ b/src/Event/AccessEventBase.php
@@ -88,6 +88,8 @@ public function getUser(): AccountInterface {
   public function getAccessResult(): AccessResultInterface {
     $access = $this->access;
 
+    // Enrich the access result object with our cacheability metadata in case it
+    // supports it.
     if ($access instanceof RefinableCacheableDependencyInterface) {
       $access->addCacheableDependency($this);
     }