package private method added that helps to get unique

document numbers and that should not upset anybody


git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150368 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/lucene/index/IndexWriter.java

@@ -311,6 +311,10 @@ public class IndexWriter {
     }
   }
 
+  final int getSegmentsCounter(){
+    return segmentInfos.counter;
+  }
+  
   private final synchronized String newSegmentName() {
     return "_" + Integer.toString(segmentInfos.counter++, Character.MAX_RADIX);
   }