From 0fb8fb328a6cb74e7d1bfe70f3509b1ebeb1ecc2 Mon Sep 17 00:00:00 2001
From: Ole Lensmar <ole.lensmar@smartbear.com>
Date: Thu, 1 Sep 2016 23:05:19 +0200
Subject: [PATCH] fixed NPE on missing model definitions in Swagger definition

---
 .../java/io/swagger/inflector/utils/VendorSpecFilter.java   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/io/swagger/inflector/utils/VendorSpecFilter.java b/src/main/java/io/swagger/inflector/utils/VendorSpecFilter.java
index c48a5c74..36fcd88b 100644
--- a/src/main/java/io/swagger/inflector/utils/VendorSpecFilter.java
+++ b/src/main/java/io/swagger/inflector/utils/VendorSpecFilter.java
@@ -34,8 +34,10 @@ public Map<String, Model> filterDefinitions(SwaggerSpecFilter filter, Map<String
         final Map<String, Model> filteredDefinitions = super.filterDefinitions(filter, definitions, params, cookies,
                 headers);
 
-        for (Model model : filteredDefinitions.values()) {
-            filterVendorExtensions(model.getVendorExtensions());
+        if( filteredDefinitions != null ) {
+            for (Model model : filteredDefinitions.values()) {
+                filterVendorExtensions(model.getVendorExtensions());
+            }
         }
 
         return filteredDefinitions;