From 4b7b6bf5f04cb46643a4392089e37e102bde8419 Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Tue, 21 Jun 2016 11:14:13 +0300
Subject: [PATCH] change signature hierarchy: don't build children to check for
 leaf (IDEA-157682)

---
 .../refactoring/changeSignature/MethodNodeBase.java       | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/platform/lang-impl/src/com/intellij/refactoring/changeSignature/MethodNodeBase.java b/platform/lang-impl/src/com/intellij/refactoring/changeSignature/MethodNodeBase.java
index 3550c4706e25..bc469581bbb3 100644
--- a/platform/lang-impl/src/com/intellij/refactoring/changeSignature/MethodNodeBase.java
+++ b/platform/lang-impl/src/com/intellij/refactoring/changeSignature/MethodNodeBase.java
@@ -85,6 +85,14 @@ public abstract class MethodNodeBase<M extends PsiElement> extends CheckedTreeNo
     return super.getChildCount();
   }
 
+  @Override
+  public boolean isLeaf() {
+    if (children == null) {
+      return false;
+    }
+    return super.isLeaf();
+  }
+
   @Override
   public int getIndex(TreeNode aChild) {
     buildChildren();