public function toXMLString()
{
$str = '';
$str .= '<ns:UpdateRecurringPaymentsProfileReq>';
if ($this->UpdateRecurringPaymentsProfileRequest != null) {
$str .= '<ns:UpdateRecurringPaymentsProfileRequest>';
$str .= $this->UpdateRecurringPaymentsProfileRequest->toXMLString();
$str .= '</ns:UpdateRecurringPaymentsProfileRequest>';
}
$str .= '</ns:UpdateRecurringPaymentsProfileReq>';
return $str;
}
