From 93029f13dcc3ff1b093c6cd478d21f6f46d536ef Mon Sep 17 00:00:00 2001
From: Aleksander Nowakowski <aleksander.nowakowski@nordicsemi.no>
Date: Tue, 21 Nov 2023 14:04:58 +0100
Subject: [PATCH] Bug fix: Keep Constructor for GroupReturnCode class when
 using Proguard

---
 .../main/java/io/runtime/mcumgr/response/HasReturnCode.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mcumgr-core/src/main/java/io/runtime/mcumgr/response/HasReturnCode.java b/mcumgr-core/src/main/java/io/runtime/mcumgr/response/HasReturnCode.java
index c632ab40..0f22d30e 100644
--- a/mcumgr-core/src/main/java/io/runtime/mcumgr/response/HasReturnCode.java
+++ b/mcumgr-core/src/main/java/io/runtime/mcumgr/response/HasReturnCode.java
@@ -1,5 +1,6 @@
 package io.runtime.mcumgr.response;
 
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import org.jetbrains.annotations.NotNull;
@@ -18,6 +19,9 @@ class GroupReturnCode {
         @JsonProperty("rc")
         public int rc;
 
+        @JsonCreator
+        public GroupReturnCode() {}
+
         @Override
         @NotNull
         public String toString() {