private function prepareCreditorFees()
    {
        $creditorFees = "";
        if(!empty($this->_detailsTransactionByCode->getCreditorFees()))
        {
            $creditorFees = array(
                'intermediationRateAmount'  => $this->_detailsTransactionByCode->getCreditorFees()->getIntermediationRateAmount(),
                'intermediationFeeAmount'   => $this->_detailsTransactionByCode->getCreditorFees()->getIntermediationFeeAmount(),
                'installmentFeeAmount'      => $this->_detailsTransactionByCode->getCreditorFees()->getInstallmentFeeAmount(),
                'operationalFeeAmount'      => $this->_detailsTransactionByCode->getCreditorFees()->getOperationalFeeAmount(),
                'commissionFeeAmount'       => $this->_detailsTransactionByCode->getCreditorFees()->getCommissionFeeAmount()
            );
        }
        return $creditorFees;
    }