From 71dbce557d47359fbc4f1505bf2da459df121d17 Mon Sep 17 00:00:00 2001
From: Mahmoud Ismail <maism@hops.io>
Date: Tue, 16 Oct 2018 12:19:06 +0200
Subject: [PATCH] Mark sourceImage as Nullable

---
 .../java/org/jclouds/googlecomputeengine/domain/AttachDisk.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/providers/google-compute-engine/src/main/java/org/jclouds/googlecomputeengine/domain/AttachDisk.java b/providers/google-compute-engine/src/main/java/org/jclouds/googlecomputeengine/domain/AttachDisk.java
index 5c34818dbb..06656bb3b6 100644
--- a/providers/google-compute-engine/src/main/java/org/jclouds/googlecomputeengine/domain/AttachDisk.java
+++ b/providers/google-compute-engine/src/main/java/org/jclouds/googlecomputeengine/domain/AttachDisk.java
@@ -35,7 +35,7 @@ public abstract class AttachDisk {
       @Nullable public abstract Long diskSizeGb();
 
       /** The {@link org.jclouds.googlecomputeengine.domain.Image#selfLink() source image}. */
-      public abstract URI sourceImage();
+      @Nullable public abstract URI sourceImage();
 
       @Nullable public abstract URI diskType();