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