Polish

spring-context/src/main/java/org/springframework/cache/interceptor/CacheAspectSupport.java

@@ -40,6 +40,7 @@ import org.springframework.beans.factory.SmartInitializingSingleton;
 import org.springframework.beans.factory.annotation.BeanFactoryAnnotationUtils;
 import org.springframework.cache.Cache;
 import org.springframework.cache.CacheManager;
+import org.springframework.context.ApplicationContext;
 import org.springframework.context.expression.AnnotatedElementKey;
 import org.springframework.expression.EvaluationContext;
 import org.springframework.lang.UsesJava8;