requestOutput method Null safety

void requestOutput(
  1. {String consumer = '',
  2. OutputMode outputMode = OutputMode.pushPull,
  3. Bias bias = Bias.unknown,
  4. ActiveState activeState = ActiveState.high,
  5. @required bool initialValue = false}
)

Implementation

void requestOutput(
    {String consumer = '',
      OutputMode outputMode = OutputMode.pushPull,
      Bias bias = Bias.unknown,
      ActiveState activeState = ActiveState.high,
      @required bool initialValue = false})  {
  ArgumentError.checkNotNull(outputMode, "outputMode");
  ArgumentError.checkNotNull(activeState, "activeState");
  ArgumentError.checkNotNull(initialValue, "initialValue");
  _checkSupportsBiasValue(bias);

  // we need to lock both info and ownership.
  //return _synchronizedWrite(() async {
//      if (_requested) {
//        throw StateError("Can't request line because it is already requested.");
//      }

    _ProxyGpiodPlatformSide.requestLine(
        lineHandle: _lineHandle,
        consumer: consumer,
        direction: LineDirection.output,
        outputMode: outputMode,
        bias: bias,
        activeState: activeState,
        initialValue: initialValue);

    _info = _ProxyGpiodPlatformSide.getLineInfo(_lineHandle);
    _value = initialValue;
//      _requested = true;
 // });
}