public function initTotals()
    {
        if ($value = $this->_getInterestAmount()) {
            $installmentInterest = new DataObject(
                [
                    'code' => 'gabrielqs_installments_interest_amount',
                    'strong' => false,
                    'value' => $value,
                    'label' => __('Interest'),
                    'class' => __('Interest'),
                ]
            );

            $this->getParentBlock()->addTotal($installmentInterest, 'gabrielqs_installments_interest_amount');
        }

        return $this;
    }