From 8763eae790f408f0e8ab267ef98853e071cc2786 Mon Sep 17 00:00:00 2001
From: "Gregory.Shrago" <gregory.shrago@jetbrains.com>
Date: Wed, 4 Oct 2017 05:24:42 +0300
Subject: [PATCH] filter out duplicate elements

---
 .../jetbrains/python/structureView/PyStructureViewElement.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/python/src/com/jetbrains/python/structureView/PyStructureViewElement.java b/python/src/com/jetbrains/python/structureView/PyStructureViewElement.java
index a6089dcf8bd7..03a0a89c9a08 100644
--- a/python/src/com/jetbrains/python/structureView/PyStructureViewElement.java
+++ b/python/src/com/jetbrains/python/structureView/PyStructureViewElement.java
@@ -23,6 +23,7 @@ import com.intellij.openapi.editor.colors.TextAttributesKey;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.ui.LayeredIcon;
+import com.intellij.util.containers.ContainerUtil;
 import com.jetbrains.python.PyNames;
 import com.jetbrains.python.psi.*;
 import com.jetbrains.python.psi.impl.PyPsiUtils;
@@ -161,7 +162,7 @@ public class PyStructureViewElement implements StructureViewTreeElement {
   }
 
   private Collection<PyElement> getElementChildren(final PyElement element) {
-    final Collection<PyElement> children = new ArrayList<>();
+    Collection<PyElement> children = ContainerUtil.newLinkedHashSet();
     PyPsiUtils.assertValid(element);
     element.acceptChildren(new PyElementVisitor() {
       @Override