From 14f5b4981f1f1682c0aae005b4b60bfead91cb61 Mon Sep 17 00:00:00 2001
From: Kui LIU <brucekuiliu@gmail.com>
Date: Fri, 11 Aug 2017 22:11:01 +0200
Subject: [PATCH] Fix the bug of clearing actionset's subactionset.

---
 .../java/edu/lu/uni/serval/gumtree/regroup/SimplifyTree.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/edu/lu/uni/serval/gumtree/regroup/SimplifyTree.java b/src/main/java/edu/lu/uni/serval/gumtree/regroup/SimplifyTree.java
index 7567097..cbe12e4 100644
--- a/src/main/java/edu/lu/uni/serval/gumtree/regroup/SimplifyTree.java
+++ b/src/main/java/edu/lu/uni/serval/gumtree/regroup/SimplifyTree.java
@@ -612,7 +612,8 @@ public class SimplifyTree {
 
 	private List<Action> getAllMoveActions2(HierarchicalActionSet actionSet) {
 		List<Action> allMoveActions = new ArrayList<>();
-		List<HierarchicalActionSet> actions = actionSet.getSubActions();
+		List<HierarchicalActionSet> actions = new ArrayList<>();
+		actions.addAll(actionSet.getSubActions());
 		if (actions.size() == 0) {
 			return null;
 		}