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