Polish

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/cache/CacheAutoConfigurationTests.java

@@ -316,7 +316,8 @@ public class CacheAutoConfigurationTests {
 							cacheManager).getPropertyValue("defaultCacheConfig");
 					assertThat(redisCacheConfiguration.getTtl())
 							.isEqualTo(java.time.Duration.ofSeconds(30));
-					assertThat(redisCacheConfiguration.getKeyPrefix()).contains("bar");
+					assertThat(redisCacheConfiguration.getKeyPrefixFor(""))
+							.isEqualTo("bar");
 				});
 	}
 

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/convert/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Support for type conversion.
+ */
+package org.springframework.boot.convert;