From 8b773b548160d909d24acdb9277e08014f2d18e8 Mon Sep 17 00:00:00 2001
From: Marko Luukkainen <marko.luukkainen@vtt.fi>
Date: Wed, 22 Nov 2017 18:22:09 +0200
Subject: [PATCH] Add Maybe for SCL functions that can return null.

---
 org.simantics.interop.update/scl/Interop/Update.scl | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/org.simantics.interop.update/scl/Interop/Update.scl b/org.simantics.interop.update/scl/Interop/Update.scl
index e850b05..40d61b5 100644
--- a/org.simantics.interop.update/scl/Interop/Update.scl
+++ b/org.simantics.interop.update/scl/Interop/Update.scl
@@ -21,13 +21,13 @@ importJava "org.simantics.interop.update.model.ModelUpdate" where
   applySelectedUpdates :: ModelUpdate -> <WriteGraph> ()
   
   @JavaName getUpdateTree2
-  getUpdateTree2 :: ModelUpdate -> <Proc> UpdateTree
+  getUpdateTree2 :: ModelUpdate -> <Proc> Maybe UpdateTree
   
   @JavaName getUpdateList2
-  getUpdateList2 :: ModelUpdate -> <Proc> UpdateList
+  getUpdateList2 :: ModelUpdate -> <Proc> Maybe UpdateList
   
   @JavaName getChanges2
-  getGraphChanges2 :: ModelUpdate -> <Proc> GraphChanges
+  getGraphChanges2 :: ModelUpdate -> <Proc> Maybe GraphChanges
   
   @JavaName getUpdateTree3
   getUpdateTree3 :: ModelUpdate -> <Proc> Maybe UpdateTree
-- 
2.47.1