open method
Implementation
Future<void> open(int level, String cacheDir, String logDir,
String namePrefix, int cacheDays, bool consoleLogOpen, String pubKey) {
return methodChannel.invokeMethod<void>('open', {
'level': level,
'cacheDir': cacheDir,
'logDir': logDir,
'namePrefix': namePrefix,
'cacheDays': cacheDays,
'consoleLogOpen': consoleLogOpen,
'pubKey': pubKey
});
}