v0.2.53..v0.2.54 changeset BuildingLevelsVisitor.h

diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/BuildingLevelsVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/BuildingLevelsVisitor.h
index 82f0156..8eb1e1e 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/BuildingLevelsVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/BuildingLevelsVisitor.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 
 #ifndef BUILDING_LEVELS_VISITOR_H
@@ -68,6 +68,8 @@ public:
     return average;
   }
 
+  virtual std::string getClassName() const { return className(); }
+
 private:
 
   BuildingCriterion _crit;