From dae1611bec8da6f4456a76a20879e5192ca16838 Mon Sep 17 00:00:00 2001
From: Oliver Eikemeier <eikemeier@fillmore-labs.com>
Date: Fri, 11 Jun 2021 13:53:53 +0200
Subject: [PATCH] Minor style improvements

Signed-off-by: Oliver Eikemeier <eikemeier@fillmore-labs.com>
---
 .../kafka/serde/avromapper/GenericMapperHelper.java         | 2 +-
 .../kafka/serde/confluent/SpecificAvroDeserializer.java     | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/main/java/de/melsicon/kafka/serde/avromapper/GenericMapperHelper.java b/src/main/java/de/melsicon/kafka/serde/avromapper/GenericMapperHelper.java
index 7490255..2952074 100644
--- a/src/main/java/de/melsicon/kafka/serde/avromapper/GenericMapperHelper.java
+++ b/src/main/java/de/melsicon/kafka/serde/avromapper/GenericMapperHelper.java
@@ -20,7 +20,7 @@ public static State stateMap(GenericEnumSymbol<?> state) {
         return State.ON;
 
       default:
-        throw new IllegalArgumentException("Unexpected Enum value: " + state.toString());
+        throw new IllegalArgumentException("Unexpected Enum value: " + state);
     }
   }
 
diff --git a/src/main/java/de/melsicon/kafka/serde/confluent/SpecificAvroDeserializer.java b/src/main/java/de/melsicon/kafka/serde/confluent/SpecificAvroDeserializer.java
index a83fee8..a7c0bba 100644
--- a/src/main/java/de/melsicon/kafka/serde/confluent/SpecificAvroDeserializer.java
+++ b/src/main/java/de/melsicon/kafka/serde/confluent/SpecificAvroDeserializer.java
@@ -8,6 +8,7 @@
 import org.apache.avro.specific.SpecificRecord;
 import org.apache.kafka.common.errors.SerializationException;
 import org.apache.kafka.common.serialization.Deserializer;
+import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 public final class SpecificAvroDeserializer<T extends SpecificRecord> implements Deserializer<T> {
@@ -34,12 +35,13 @@ private static <T extends SpecificRecord> Schema schemaForClass(Class<T> type) {
   }
 
   @Override
+  @SuppressWarnings("nullness:override.param")
   public void configure(
-      @Nullable Map<String, ?> deserializerConfig, boolean isDeserializerForRecordKeys) {
+      @Nullable Map<String, ? extends @NonNull Object> deserializerConfig, boolean isDeserializerForRecordKeys) {
     Map<String, Object> specificAvroEnabledConfig =
         deserializerConfig == null
             ? new HashMap<>()
-            : new HashMap<>((Map<String, ? extends Object>) deserializerConfig);
+            : new HashMap<>(deserializerConfig);
     specificAvroEnabledConfig.put(KafkaAvroDeserializerConfig.SPECIFIC_AVRO_READER_CONFIG, true);
 
     inner.configure(specificAvroEnabledConfig, isDeserializerForRecordKeys);