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