@Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
        checkOpen();
        return new StatementImpl(this);
    }
Returns configuration for current connection. Changes made to the instance of configuration may have side effects.
Application should avoid making changes to this object until it is documented.
@return - reference to internal instance of JdbcConfiguration
jdbc-v2/src/main/java/com/clickhouse/jdbc/ConnectionImpl.java