From 2e131c5164992742e686ba4e773f98e4a1b7bcbf Mon Sep 17 00:00:00 2001
From: andrewlalis <me@andrewlalis.com>
Date: Mon, 15 Jun 2026 15:25:27 -0400
Subject: [PATCH] Added const serialization

---
 source/handy_http_primitives/optional.d | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/handy_http_primitives/optional.d b/source/handy_http_primitives/optional.d
index 2a31c92..e90f0ea 100644
--- a/source/handy_http_primitives/optional.d
+++ b/source/handy_http_primitives/optional.d
@@ -123,7 +123,7 @@ struct Optional(T) {
             * Params:
             *   serializer = The serializer to use (provided by ASDF).
             */
-            void serialize(S)(ref S serializer) {
+            void serialize(S)(ref S serializer) const {
                 if (this.isNull) {
                     serializer.putValue(null);
                 } else {