public function toArray()
    {
        return array(
                'eid'          => $this->eid,
                'id'           => $this->id,
                'description'  => $this->description,
                'months'       => $this->months,
                'startfee'     => $this->startFee,
                'invoicefee'   => $this->invoiceFee,
                'interestrate' => $this->interestRate,
                'minamount'    => $this->minAmount,
                'country'      => $this->country,
                'type'         => $this->type,
                'expire'       => $this->expire
        );
    }