code: public static String geth2gisVersion() {
          try (InputStream fs = H2GISFunctions.class.getResourceAsStream("/org/h2gis/functions/system/version.txt")) {
              BufferedReader bufRead = new BufferedReader(new InputStreamReader(fs));
              StringBuilder builder = new StringBuilder();
              String line = null;
              while ((line = bufRead.readLine()) != null) {
                  builder.append(line).append(" ");
              }
              return builder.toString();
  
          } catch (IOException ex) {
              return "unknown";
          }
      }
docs: Return the H2GIS version available in the version txt file Otherwise
  return unknown
  
  @return