code: public void contextClickAt(double lat, double lon) {
              final Coordinate coordinate = new Coordinate(lat, lon);
              if (logger.isTraceEnabled()) {
                  logger.trace("JS reports context click at {}", coordinate);
              }
              fireEvent(new MapViewEvent(MapViewEvent.MAP_RIGHTCLICKED, coordinate));
          }
docs: called when the user has context-clicked in the map. the coordinates are EPSG:4326 (WGS) values.
  
  @param lat
  new latitude value
  @param lon
  new longitude value