bbejeck commented on code in PR #18975:
URL: https://github.com/apache/kafka/pull/18975#discussion_r1964440517


##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/WrappingNullableUtils.java:
##########
@@ -91,17 +91,15 @@ public static <V> Serde<V> prepareValueSerde(final Serde<V> 
specificSerde, final
         return prepareSerde(specificSerde, getter, false);
     }
 
-    @SuppressWarnings({"rawtypes", "unchecked"})
     public static <T> void initNullableSerializer(final Serializer<T> 
specificSerializer, final SerdeGetter getter) {
         if (specificSerializer instanceof WrappingNullableSerializer) {
-            ((WrappingNullableSerializer) 
specificSerializer).setIfUnset(getter);
+            ((WrappingNullableSerializer<?, ?, ?>) 
specificSerializer).setIfUnset(getter);
         }
     }
 
-    @SuppressWarnings({"rawtypes", "unchecked"})
     public static <T> void initNullableDeserializer(final Deserializer<T> 
specificDeserializer, final SerdeGetter getter) {
         if (specificDeserializer instanceof WrappingNullableDeserializer) {
-            ((WrappingNullableDeserializer) 
specificDeserializer).setIfUnset(getter);
+            ((WrappingNullableDeserializer<?, ?, ?>) 
specificDeserializer).setIfUnset(getter);

Review Comment:
   Too bad we don't have pattern matching in Java 11 :(



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