class PostgreSQLPositionManager extends BasePositionManager<WalPosition> {

    @Override
    public WalPosition getPosition() {
        WalPosition position = super.getPosition();
        if (null != position) {
            return position;
        }
        initPosition();
        return super.getPosition();
    }

    public  PostgreSQLPositionManager(final DataSource dataSource);
    public  PostgreSQLPositionManager(final String position);

}