Polishing

spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/JCacheAspectSupport.java

@@ -77,6 +77,7 @@ public class JCacheAspectSupport extends AbstractCacheInvoker implements Initial
 		return this.cacheOperationSource;
 	}
 
+	@Override
 	public void afterPropertiesSet() {
 		Assert.state(getCacheOperationSource() != null, "The 'cacheOperationSource' property is required: " +
 				"If there are no cacheable methods, then don't use a cache aspect.");