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; }