From 59fe56755ccc6c6b4575e2ece04dd71b11c6cd0a Mon Sep 17 00:00:00 2001
From: Tor Brede Vekterli <vekterli@yahoo-inc.com>
Date: Thu, 9 Feb 2017 10:56:26 +0100
Subject: Use covariant return type

---
 .../src/main/java/com/yahoo/document/datatypes/ReferenceFieldValue.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'document')

diff --git a/document/src/main/java/com/yahoo/document/datatypes/ReferenceFieldValue.java b/document/src/main/java/com/yahoo/document/datatypes/ReferenceFieldValue.java
index 459681d52ae..1e4079dd3fe 100644
--- a/document/src/main/java/com/yahoo/document/datatypes/ReferenceFieldValue.java
+++ b/document/src/main/java/com/yahoo/document/datatypes/ReferenceFieldValue.java
@@ -159,7 +159,7 @@ public class ReferenceFieldValue extends FieldValue {
      * @return reference DocumentId, or null if none has been set
      */
     @Override
-    public Object getWrappedValue() {
+    public DocumentId getWrappedValue() {
         return documentId.orElse(null);
     }
 }
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