code: public static Feature createBounds(final String id,
              final LngLatAlt southwest,
              final LngLatAlt northeast) {
          final Feature feature = new Feature();
          feature.setId(id);
          if (northeast == null || southwest == null) {
              throw new IllegalArgumentException(
                      "Must have a proper bounding box");
          }
          final double[] bbox = {
                  southwest.getLongitude(),
                  southwest.getLatitude(),
                  northeast.getLongitude(),
                  northeast.getLatitude()
          };
          final Polygon polygon = new Polygon();
          feature.setGeometry(polygon);
          polygon.setBbox(bbox);
          final List<LngLatAlt> elements = new ArrayList<>(5);
          elements.add(new LngLatAlt(bbox[SW_LNG], bbox[SW_LAT]));
          elements.add(new LngLatAlt(bbox[NE_LNG], bbox[SW_LAT]));
          elements.add(new LngLatAlt(bbox[NE_LNG], bbox[NE_LAT]));
          elements.add(new LngLatAlt(bbox[SW_LNG], bbox[NE_LAT]));
          elements.add(new LngLatAlt(bbox[SW_LNG], bbox[SW_LAT]));
          polygon.add(elements);
          feature.setBbox(bbox);
          return feature;
      }
docs: Build a bounding box feature.
  
  @param id the ID string
  @param southwest the southwest corner of the bounding box
  @param northeast the northeast corner of the bounding box
  @return the Feature for the new bounds