From 88f7f661701e6d9982a6de742dfd568966275abc Mon Sep 17 00:00:00 2001
From: Artem Bilan <abilan@pivotal.io>
Date: Thu, 7 Sep 2017 13:47:07 -0400
Subject: [PATCH] Fix `singletonMap` generic arg for Java 7

https://build.spring.io/browse/SK-SK13X-JOB1-23
---
 .../kafka/listener/KafkaMessageListenerContainer.java           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-kafka/src/main/java/org/springframework/kafka/listener/KafkaMessageListenerContainer.java b/spring-kafka/src/main/java/org/springframework/kafka/listener/KafkaMessageListenerContainer.java
index acbe0d45..62f8dcf7 100644
--- a/spring-kafka/src/main/java/org/springframework/kafka/listener/KafkaMessageListenerContainer.java
+++ b/spring-kafka/src/main/java/org/springframework/kafka/listener/KafkaMessageListenerContainer.java
@@ -166,7 +166,7 @@ public class KafkaMessageListenerContainer<K, V> extends AbstractMessageListener
 			Iterator<MetricName> metricIterator = metrics.keySet().iterator();
 			if (metricIterator.hasNext()) {
 				String clientId = metricIterator.next().tags().get("client-id");
-				return Collections.singletonMap(clientId, metrics);
+				return Collections.<String, Map<MetricName, ? extends Metric>>singletonMap(clientId, metrics);
 			}
 		}
 		return Collections.emptyMap();