public static List <decimal?> Tema(this IEnumerable <ICandle> candles, int?period = null, ICandleVariableCode type = null)
{
period ??= 30;
type ??= CandleVariableCode.CLOSE;
IIndicatorOptions options = new TemaOptions(period.Value, type);
Tema tema = new Tema();
return(tema.Get(candles, options));
}