From 12a29047a19ba960865cb9a696ae4cca78715d77 Mon Sep 17 00:00:00 2001
From: student <student@69.161.224.76>
Date: Mon, 19 Mar 2018 17:01:22 -0400
Subject: Simplify Tree.collapse

---
 base/src/main/java/bjc/utils/data/ITree.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'base/src/main/java/bjc/utils/data/ITree.java')

diff --git a/base/src/main/java/bjc/utils/data/ITree.java b/base/src/main/java/bjc/utils/data/ITree.java
index 5a4d645..3e3d5ce 100644
--- a/base/src/main/java/bjc/utils/data/ITree.java
+++ b/base/src/main/java/bjc/utils/data/ITree.java
@@ -1,10 +1,12 @@
 package bjc.utils.data;
 
+import java.util.function.BiFunction;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
 import java.util.function.UnaryOperator;
 
+import bjc.utils.funcdata.IList;
 import bjc.utils.funcdata.bst.TreeLinearizationMethod;
 import bjc.utils.functypes.ListFlattener;
 
@@ -57,7 +59,7 @@ public interface ITree<ContainedType> {
 	 * @return The final transformed state.
 	 */
 	<NewType, ReturnedType> ReturnedType collapse(Function<ContainedType, NewType> leafTransform,
-			Function<ContainedType, ListFlattener<NewType>> nodeCollapser,
+			BiFunction<ContainedType, IList<NewType>, NewType> nodeCollapser,
 			Function<NewType, ReturnedType> resultTransformer);
 
 	/**
-- 
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