docs: public static String sqlmonthname(List<?> parsedArgs) throws SQLException {
      if (parsedArgs.size() != 1) {
        throw new PSQLException(GT.tr("{0} function takes one and only one argument.", "monthname"),
            PSQLState.SYNTAX_ERROR);
      }
      return "to_char(" + parsedArgs.get(0) + ",'Month')";
    }