Find,Display Method's
Find:
public static VendTable find(
    VendAccount             _vendAccount ,
    boolean                 _forupdate        = false,
    ConcurrencyModel        _concurrencyModel = ConcurrencyModel::Auto)
{
    VendTable vendTable;

    vendTable.selectForUpdate(_forupdate);
    if (_forupdate  && _concurrencyModel != ConcurrencyModel::Auto)
    {
        vendTable.concurrencyModel(_concurrencyModel);
    }

    if (_vendAccount != '')
    {
        select firstonly vendTable
            where vendTable.AccountNum == _vendAccount;
    }

    return vendTable;
}

Display:
display public locality locality()
{
    return VendTable::find(this.OrderAccount).Locality;
}