def METHOD_NAME(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
    self.freqai_info = self.config["freqai"]
    dataframe = self.freqai.start(dataframe, metadata, self)
    dataframe["target_roi"] = dataframe["&-s_close_mean"] + dataframe["&-s_close_std"] * 1.25
    dataframe["sell_roi"] = dataframe["&-s_close_mean"] - dataframe["&-s_close_std"] * 1.25
    return dataframe