From 1ee6fcc67f45f89314e92a3286e68f00490ea248 Mon Sep 17 00:00:00 2001
From: Marcin Banasiak <marcin.banasiak@gmail.com>
Date: Wed, 12 Nov 2025 19:03:21 +0100
Subject: [PATCH] [Java][RestTemplate] Allow to override default header

---
 .../handlebars/Java/libraries/resttemplate/ApiClient.mustache   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/resources/handlebars/Java/libraries/resttemplate/ApiClient.mustache b/src/main/resources/handlebars/Java/libraries/resttemplate/ApiClient.mustache
index c74ff62c8f..23dba3dc7e 100644
--- a/src/main/resources/handlebars/Java/libraries/resttemplate/ApiClient.mustache
+++ b/src/main/resources/handlebars/Java/libraries/resttemplate/ApiClient.mustache
@@ -250,7 +250,7 @@ public class ApiClient {
      * @return ApiClient this client
      */
     public ApiClient addDefaultHeader(String name, String value) {
-        defaultHeaders.add(name, value);
+        defaultHeaders.set(name, value);
         return this;
     }