incorrect API documention for error codes

Both cTrader Automate 3.6 and https://ctrader.com/api/reference/errorcode give an example that the "build" command of cTrader Automate 3.6 rejects with an error.

The example:

protected override void OnError(Error error)
{
    //  Print the error to the log
    switch (error.Code)
    {
            case ErrorCode.BadVolume: Print("Bad Volume");
            break;
            case ErrorCode.TechnicalError:Print("Technical Error");
            break;
            case ErrorCode.NoMoney: Print("No Money");
            break;
            case ErrorCode.Disconnected: Print("Disconnected");
            break;
            case ErrorCode.MarketClosed: Print("Market Closed");
            break;
    }
}

gives this error: 
Error CS0115: 'cAlgo.Robots.ScalperBot.OnStop(cAlgo.API.ErrorCode)': no suitable method found to override

The cursor sits immediately in front of the OnError token:  protected override void |OnError(Error error)