code: public static String mangleURL(String url) throws SQLException {
          if (url.startsWith(POSTGIS_H2PROTOCOL)) {
              return POSTGIS_PROTOCOL + url.substring(POSTGIS_H2PROTOCOL.length());
          } else {
              throw new SQLException("Unknown protocol or subprotocol in url " + url);
          }
      }
docs: Mangles the PostGIS URL to return the original PostGreSQL URL.
  
  @return Mangled PostGIS URL