missing override

include/core/tree_manager/tree_manager_sliding_window.h

@@ -19,7 +19,7 @@ struct ParamsTreeManagerSlidingWindow : public ParamsTreeManagerBase
             fix_first_frame             = _server.getParam<bool>        (prefix + "/fix_first_frame");
             viral_remove_empty_parent   = _server.getParam<bool>        (prefix + "/viral_remove_empty_parent");
         }
-        std::string print() const
+        std::string print() const override
         {
             return  ParamsTreeManagerBase::print()                                            + "\n"
                         + "n_frames: "                  + std::to_string(n_frames)                  + "\n"

include/core/tree_manager/tree_manager_sliding_window_dual_rate.h

@@ -19,7 +19,7 @@ struct ParamsTreeManagerSlidingWindowDualRate : public ParamsTreeManagerSlidingW
             assert(n_frames_recent <= n_frames);
             rate_old_frames = _server.getParam<unsigned int>(prefix + "/rate_old_frames");
         }
-        std::string print() const
+        std::string print() const override
         {
             return ParamsTreeManagerBase::print()                            + "\n"
                         + "n_frames_recent: "   + std::to_string(n_frames_recent)   + "\n"