code: protected void mayLeavePlace ()
      {
          if (_controller != null) {
              try {
                  _controller.mayLeavePlace(_plobj);
              } catch (Exception e) {
                  log.warning("Place controller choked in mayLeavePlace", "plobj", _plobj, e);
              }
          }
      }
docs: Called to inform our controller that we may be leaving the current place.