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