@Override
  public void close() throws IOException {
    // This is a table transition... after the last region. Check previous.
    // Should be last region. If not, its a hole on end of laster table.
    if (this.previous != null && !this.previous.isLast()) {
      addHole(this.previous, RegionInfoBuilder.UNDEFINED);
    }
    this.closed = true;
  }
Returns True iff first row in hbase:meta or if we've broached a new table in hbase:meta
hbase-server/src/main/java/org/apache/hadoop/hbase/master/janitor/ReportMakingVisitor.java