ImportBase::import

public function import(array $params)
    {
        $result = new SaleResult();
        if($this->getId()>0)
        {
            $result = $this->update($params);
        }
        elseif($this->isImportable())
        {
            $result = $this->add($params);
        }

	$this->initLogger();

        return $result;
    }