From 6448dce4ea5aa2eb602064668326b58cf2eaaff6 Mon Sep 17 00:00:00 2001
From: Adrien Grand <jpountz@apache.org>
Date: Thu, 28 Mar 2013 09:37:47 +0000
Subject: [PATCH] Add missing javadocs.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1462009 13f79535-47bb-0310-9956-ffa450edef68
---
 lucene/core/src/java/org/apache/lucene/index/MergePolicy.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java b/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
index f6768da367b..fcc21052ba6 100644
--- a/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
+++ b/lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
@@ -62,6 +62,9 @@ public abstract class MergePolicy implements java.io.Closeable, Cloneable {
 
   /** A map of doc IDs. */
   public static abstract class DocMap {
+    /** Sole constructor, typically invoked from sub-classes constructors. */
+    protected DocMap() {}
+
     /** Return the new doc ID according to its old value. */
     public abstract int map(int old);