private function handleLogArgument($argValue)
{
$severities = [];
foreach ($argValue as $value) {
$severity = Violation::getSeverityFromString($value);
if ($severity === null) {
throw new UnrecognizedOptionException('Unrecognized severity: ' . $value);
}
$severities[] = $severity;
}
$this->loggedSeverities = array_unique($severities);
}