def METHOD_NAME(self) -> pd.DataFrame:
    """Prepares the request to be made.  I am using their https interface instead of their python client.
    This updated to .C.0"""
    base_url = "https://hist.databento.com/v0/timeseries.get_range"
    symbol = self.symbol + ".C.0" if self.exchange == "GLBX.MDP3" else self.symbol
    params = {
        "dataset": self.exchange,
        "symbols": symbol,
        "schema": "ohlcv-1d",
        "start": self.start,
        "end": self.end,
        "stype_in": self.stype,
        "encoding": "csv",
    }
    auth = requests.auth.HTTPBasicAuth(
        get_current_user().credentials.API_DATABENTO_KEY, ""
    )
    data = self.process_request(base_url, params, auth)
    if data.empty:
        return pd.DataFrame()
    return data