docs: public static String sqlinsert(List<?> parsedArgs) throws SQLException {
      if (parsedArgs.size() != 4) {
        throw new PSQLException(GT.tr("{0} function takes four and only four argument.", "insert"),
            PSQLState.SYNTAX_ERROR);
      }
      StringBuilder buf = new StringBuilder();
      buf.append("overlay(");
      buf.append(parsedArgs.get(0)).append(" placing ").append(parsedArgs.get(3));
      buf.append(" from ").append(parsedArgs.get(1)).append(" for ").append(parsedArgs.get(2));
      return buf.append(')').toString();
    }