docs: public static String convertToWktString(Geoshape fieldValue) throws BackendException {
          if (fieldValue.getType() == Geoshape.Type.POINT) {
              Geoshape.Point point = fieldValue.getPoint();
              return "POINT(" + point.getLongitude() + " " + point.getLatitude() + ")";
          } else {
              throw new PermanentBackendException("Cannot index " + fieldValue.getType());
          }
      }