New sample for Kafka native serialization with functions

kafka-native-serialization/src/main/java/com/example/kafkanativeserialization/MyJsonSerializer.java

@@ -0,0 +1,19 @@
+package com.example.kafkanativeserialization;
+
+import org.apache.kafka.common.header.Headers;
+import org.springframework.kafka.support.serializer.JsonSerializer;
+import org.springframework.lang.Nullable;
+
+public class MyJsonSerializer extends JsonSerializer<Object> {
+
+	@Override
+	@Nullable
+	public byte[] serialize(String topic, Headers headers, @Nullable Object data) {
+		return super.serialize(topic, headers, data);
+	}
+	@Override
+	@Nullable
+	public byte[] serialize(String topic, @Nullable Object data) {
+		return super.serialize(topic, data);
+	}
+}