public function TopMost()
    {
        $sql = Access::SqlBuilder();
        $tblArea = Area::Schema()->Table();
        $where = $sql->Equals($tblArea->Field('Layout'), $sql->Value($this->layout->GetID()))
                ->And_($sql->IsNull($tblArea->Field('Previous')));
        
        return Area::Schema()->First($where);
    }