DATAREDIS-1245 - Consider List subtypes used with RedisScript as MULTI return type.

We now consider List and subtypes of List to be returned as MULTI return type. Previously, List subtypes were considered to represent the value type.

Original Pull Request: #571

src/main/java/org/springframework/data/redis/connection/ReturnType.java

@@ -25,6 +25,7 @@ import org.springframework.lang.Nullable;
  *
  * @author Jennifer Hickey
  * @author Christoph Strobl
+ * @author Mark Paluch
  */
 public enum ReturnType {
 
@@ -62,15 +63,19 @@ public enum ReturnType {
 		if (javaType == null) {
 			return ReturnType.STATUS;
 		}
-		if (javaType.isAssignableFrom(List.class)) {
+
+		if (List.class.isAssignableFrom(javaType)) {
 			return ReturnType.MULTI;
 		}
+
 		if (javaType.isAssignableFrom(Boolean.class)) {
 			return ReturnType.BOOLEAN;
 		}
+
 		if (javaType.isAssignableFrom(Long.class)) {
 			return ReturnType.INTEGER;
 		}
+
 		return ReturnType.VALUE;
 	}
 }