setLogLevel method
Implementation
@override
Future<void> setLogLevel(LogLevel logLevel) async {
  final logLevelRaw = logLevelMap[logLevel];
  if (logLevelRaw == null || logLevelRaw.isEmpty) {
    throw ArgumentError('logLevel value is not supported');
  }
  return methodChannel.invokeMethod("setLogLevel", logLevelRaw);
}