def populate_indicators(self, dataframe: pd.DataFrame, metadata: dict) -> pd.DataFrame:
        import numpy as np

        dataframe['ema_short'] = dataframe['close'].ewm(span=self.ema_short_period.value, adjust=False).mean()
        dataframe['ema_long'] = dataframe['close'].ewm(span=self.ema_long_period.value, adjust=False).mean()

        dataframe['rsi'] = ta.RSI(np.array(dataframe['close']), timeperiod=14)

        return dataframe