docs: protected Properties getJdbcProperties(JdbcConnectionDescriptor jcd,
                                             String user, String password)
      {
          final Properties jdbcProperties;
          jdbcProperties = jcd.getConnectionPoolDescriptor().getJdbcProperties();
          if (user != null)
          {
              jdbcProperties.put("user", user);
              jdbcProperties.put("password", password);
          }
          return jdbcProperties;
      }