public function fetch($options = array()) {
        $options = new Values($options);

        $params = Values::of(array(
            'Minutes' => $options['minutes'],
            'StartDate' => Serialize::iso8601DateTime($options['startDate']),
            'EndDate' => Serialize::iso8601DateTime($options['endDate']),
            'TaskChannel' => $options['taskChannel'],
        ));

        $payload = $this->version->fetch(
            'GET',
            $this->uri,
            $params
        );

        return new WorkerStatisticsInstance(
            $this->version,
            $payload,
            $this->solution['workspaceSid'],
            $this->solution['workerSid']
        );
    }