sentry doc about before send

wfLoadExtension('Sentry');
$wgSentryDsn = 'https://examplePublicKey@o0.ingest.sentry.io/0';
$wgSentrySampleRate = 0.1;
$wgSentryBeforeSend = function($event, $hint) {
        // Ignore the event if the original exception is an instance of MyException
        if ($hint !== null && $hint->exception instanceof MyException) {
          return null;
        }
        return $event;
};