public function findLogEvents($logGroupName, $logStreamName, &$nextForwardToken)
{
$params = ['limit' => 50, 'logGroupName' => $logGroupName, 'logStreamName' => $logStreamName];
if ($nextForwardToken) {
$params['nextToken'] = $nextForwardToken;
}
$res = $this->cloudWatchLogsClient->getLogEvents($params);
$nextForwardToken = $res->get('nextForwardToken');
return $res->search('events[].message');
}