From 398da3caf6e71615dbeee4da81da1c0b5894c13a Mon Sep 17 00:00:00 2001
From: Thomas Oster <mail@thomas-oster.de>
Date: Mon, 27 Jun 2022 13:37:01 +0200
Subject: [PATCH] Fix RuntimeTypeAdapterFactory

Trying to use this class as is results in the type-property not being serialized into the JSON, thus it is not present on deserialization.
The fix from https://github.com/google/gson/issues/712#issuecomment-148955110 works. No idea why this is not merged yet.
---
 .../com/google/gson/typeadapters/RuntimeTypeAdapterFactory.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extras/src/main/java/com/google/gson/typeadapters/RuntimeTypeAdapterFactory.java b/extras/src/main/java/com/google/gson/typeadapters/RuntimeTypeAdapterFactory.java
index 3e8aebcf60..840db7d172 100644
--- a/extras/src/main/java/com/google/gson/typeadapters/RuntimeTypeAdapterFactory.java
+++ b/extras/src/main/java/com/google/gson/typeadapters/RuntimeTypeAdapterFactory.java
@@ -205,7 +205,7 @@ public RuntimeTypeAdapterFactory<T> registerSubtype(Class<? extends T> type) {
 
   @Override
   public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) {
-    if (type.getRawType() != baseType) {
+    if (null == type || !baseType.isAssignableFrom(type.getRawType())) {
       return null;
     }