From b2507777e6f54a4ed72327bb92850bd475fa1a6d Mon Sep 17 00:00:00 2001
From: Jean-Pierre Portier <141755467+JPPortier@users.noreply.github.com>
Date: Thu, 5 Dec 2024 05:16:17 +0100
Subject: [PATCH] fix (DefaultGenerator): Handle "$ref" parameter reference to
 identify parameter ID (#20239) (#20240)

---
 .../main/java/org/openapitools/codegen/DefaultGenerator.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index e5366475d55..0e377c2bd65 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -1619,7 +1619,7 @@ public class DefaultGenerator implements Generator {
     }
 
     private static String generateParameterId(Parameter parameter) {
-        return parameter.getName() + ":" + parameter.getIn();
+        return null == parameter.get$ref() ? parameter.getName() + ":" + parameter.getIn() : parameter.get$ref() ;    
     }
 
     private OperationsMap processOperations(CodegenConfig config, String tag, List<CodegenOperation> ops, List<ModelMap> allModels) {