From 27fe2ff3f8f5815decafcabaae7c42c30881b1dc Mon Sep 17 00:00:00 2001
From: Dmitry Trofimov <dmitry.trofimov@jetbrains.com>
Date: Mon, 5 Nov 2018 17:30:52 +0100
Subject: [PATCH] Avoid NPE

---
 .../python/documentation/PythonDocumentationLinkProvider.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/python/openapi/src/com/jetbrains/python/documentation/PythonDocumentationLinkProvider.java b/python/openapi/src/com/jetbrains/python/documentation/PythonDocumentationLinkProvider.java
index f4fb137eddc8..c963e17b81c2 100644
--- a/python/openapi/src/com/jetbrains/python/documentation/PythonDocumentationLinkProvider.java
+++ b/python/openapi/src/com/jetbrains/python/documentation/PythonDocumentationLinkProvider.java
@@ -19,6 +19,7 @@ import com.intellij.openapi.extensions.ExtensionPointName;
 import com.intellij.openapi.projectRoots.Sdk;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiNamedElement;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jsoup.nodes.Document;
 
@@ -45,7 +46,7 @@ public interface PythonDocumentationLinkProvider {
   }
 
   @Nullable
-  default Function<Document, String> quickDocExtractor(PsiNamedElement namedElement) {
+  default Function<Document, String> quickDocExtractor(@NotNull PsiNamedElement namedElement) {
     return null;
   }
 }