code: public void add(double lat, double lon, long time, T t, R id) {
          add(lat, lon, time, t, of(id));
      }
docs: * Adds a record to the in-memory store with the given position and time
  and id.
  
  @param lat
  latitude
  @param lon
  longitude
  @param time
  time in epoch ms
  @param t
  object
  @param id
  identifier