public async Task <IEnumerable <Candlestick> > GetCandlesticksAsync(string symbol, CandlestickInterval interval, DateTime startTime, DateTime endTime, int limit = default(int), CancellationToken token = default(CancellationToken))
{
var candlesticks = await exchangeApi.GetCandlesticksAsync(symbol, interval, startTime, endTime, limit, token).ConfigureAwait(false);
return(candlesticks);
}