From a84745b98bc3387f0bf192fffc737cd02293de90 Mon Sep 17 00:00:00 2001
From: Dmitry Batkovich <dmitry.batkovich@jetbrains.com>
Date: Tue, 25 Apr 2017 15:42:58 +0300
Subject: [PATCH] method chain completion: fix exception on completion

---
 .../compiler/chainsSearch/MethodsChainLookupRangingHelper.java   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/java/compiler/impl/src/com/intellij/compiler/chainsSearch/MethodsChainLookupRangingHelper.java b/java/compiler/impl/src/com/intellij/compiler/chainsSearch/MethodsChainLookupRangingHelper.java
index 1fb2ca0d5cee..bab07edfdc8c 100644
--- a/java/compiler/impl/src/com/intellij/compiler/chainsSearch/MethodsChainLookupRangingHelper.java
+++ b/java/compiler/impl/src/com/intellij/compiler/chainsSearch/MethodsChainLookupRangingHelper.java
@@ -120,6 +120,7 @@ public class MethodsChainLookupRangingHelper {
             context.getEditor().getCaretModel().moveToOffset(tail + 1);
           } else {
             PsiClass returnClass = ObjectUtils.notNull(PsiUtil.resolveClassInClassTypeOnly(tailReturnType));
+            PsiDocumentManager.getInstance(context.getProject()).doPostponedOperationsAndUnblockDocument(document);
             if (InheritanceUtil.isInheritor(returnClass, CommonClassNames.JAVA_UTIL_LIST)) {
               document.insertString(tail, ".get(0)");
               context.getEditor().getCaretModel().moveToOffset(tail + 5);