code: @Nonnull
    public static IError getSaxParseError (@Nonnull final IErrorLevel aErrorLevel, @Nonnull final SAXParseException ex)
    {
      return SingleError.builder ()
                        .setErrorLevel (aErrorLevel)
                        .setErrorLocation (SimpleLocation.create (ex))
                        .setErrorText ("[SAX] " + ex.getMessage ())
                        .setLinkedException (ex)
                        .build ();
    }
docs: Utility method to convert a {@link SAXParseException} into an
  {@link IError}.
  
  @param aErrorLevel
  The occurred error level. May not be <code>null</code>.
  @param ex
  The exception to convert. May not be <code>null</code>.
  @return The {@link IError} representation. Never <code>null</code>.