docs: public static int transactionFromString(String txIsolation) throws SQLException {
      switch (txIsolation) { //tx_isolation
        case "READ-UNCOMMITTED":
          return Connection.TRANSACTION_READ_UNCOMMITTED;
  
        case "READ-COMMITTED":
          return Connection.TRANSACTION_READ_COMMITTED;
  
        case "REPEATABLE-READ":
          return Connection.TRANSACTION_REPEATABLE_READ;
  
        case "SERIALIZABLE":
          return Connection.TRANSACTION_SERIALIZABLE;
  
        default:
          throw new SQLException("unknown transaction isolation level");
      }
    }