public function getWeightData($strFrom = '2019-01-01', $strUntil = '2099-12-31')
    {
        $intDateFrom = (strtotime($strFrom) + 86400) * 1000;
        $intDateUntil = strtotime($strUntil) * 1000;

        $arrParams = array(
            'from' => $intDateFrom,
            'until' => $intDateUntil
        );

        $strResponse = $this->objConnector->get(
            'https://connect.garmin.com/modern/proxy/userprofile-service/userprofile/personal-information/weightWithOutbound/',
            $arrParams,
            true
        );

        if ($this->objConnector->getLastResponseCode() != 200) {
            throw new UnexpectedResponseCodeException($this->objConnector->getLastResponseCode());
        }
        $objResponse = json_decode($strResponse, true);
        return $objResponse;
    }