From f9921168f5c02dccf9ba3718009f853e02441b1a Mon Sep 17 00:00:00 2001
From: David Turner <david.turner@elastic.co>
Date: Wed, 2 Oct 2024 11:16:42 +0100
Subject: [PATCH] Mark `AbstractRefCounted#mustIncRef` as `final` (#113761)

The overridden `RefCounted` methods on `AbstractRefCounted` are all
`final`, but `mustIncRef` uses the default implementation and can still
be overridden. For the avoidance of doubt, this commit marks
`mustIncRef` as `final`.
---
 .../java/org/elasticsearch/core/AbstractRefCounted.java     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/core/src/main/java/org/elasticsearch/core/AbstractRefCounted.java b/libs/core/src/main/java/org/elasticsearch/core/AbstractRefCounted.java
index 6580c5d4ec45..ef4184c28225 100644
--- a/libs/core/src/main/java/org/elasticsearch/core/AbstractRefCounted.java
+++ b/libs/core/src/main/java/org/elasticsearch/core/AbstractRefCounted.java
@@ -46,6 +46,12 @@ public abstract class AbstractRefCounted implements RefCounted {
         }
     }
 
+    @Override
+    public final void mustIncRef() {
+        // making this implementation `final` (to be consistent with every other `RefCounted` method implementation)
+        RefCounted.super.mustIncRef();
+    }
+
     @Override
     public final boolean tryIncRef() {
         do {