diff --git a/core/src/main/java/hudson/model/Fingerprint.java b/core/src/main/java/hudson/model/Fingerprint.java
index 6f9d255dbf75b35b825cb069f645c783e4007578..e76f330a91af71b0ecdac7f8baff88f08e25234f 100644
--- a/core/src/main/java/hudson/model/Fingerprint.java
+++ b/core/src/main/java/hudson/model/Fingerprint.java
@@ -1471,6 +1471,13 @@ public class Fingerprint implements ModelObject, Saveable {
 
     private static final XStream2 XSTREAM = new XStream2();
 
+    /**
+     * Provides the XStream instance this class is using for serialization.
+     *
+     * @return the XStream instance
+     * @since FIXME
+     */
+    @Nonnull
     public static XStream2 getXStream() {
         return XSTREAM;
     }