public function RemoveSubAccountCredits($creditType, $notes, $subAccountEmail = null, $publicAccountID = null, $credits = null, $removeAll = false) {
        return $this->sendRequest('account/removesubaccountcredits', array(
                    'creditType' => $creditType,
                    'notes' => $notes,
                    'subAccountEmail' => $subAccountEmail,
                    'publicAccountID' => $publicAccountID,
                    'credits' => $credits,
                    'removeAll' => $removeAll
        ));
    }