Update apache-kafka-2/src/main/java/com/baeldung/kafka/message/ordering/serialization/JacksonDeserializer.java

Co-authored-by: Liam Williams <liam.williams@zoho.com>

apache-kafka-2/src/main/java/com/baeldung/kafka/message/ordering/serialization/JacksonDeserializer.java

@@ -4,6 +4,10 @@ import org.apache.kafka.common.serialization.Deserializer;
 
 import java.util.Map;
 
+/**
+ * Configured via {@link org.apache.kafka.clients.consumer.ConsumerConfig#VALUE_DESERIALIZER_CLASS_CONFIG}
+ */
+@SuppressWarnings("unused")
 public class JacksonDeserializer<T> implements Deserializer<T> {
     private final ObjectMapper objectMapper = new ObjectMapper();
     private Class<T> tClass;