Polishing

spring-expression/src/main/java/org/springframework/expression/spel/ast/Projection.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -152,8 +152,7 @@ public class Projection extends SpelNodeImpl {
 			}
 			nextType = nextType.getSuperclass();
 		}
-		Class<?>[] interfaces = ClassUtils.getAllInterfacesForClass(newType);
-		for (Class<?> nextInterface : interfaces) {
+		for (Class<?> nextInterface : ClassUtils.getAllInterfacesForClassAsSet(newType)) {
 			if (nextInterface.isAssignableFrom(oldType)) {
 				return nextInterface;
 			}