def funding_rate(self, symbol: str,  **kwargs):
    """funding Rate history

    GET /fapi/v1/fundingRate

    https://binance-docs.github.io/apidocs/futures/en/#get-funding-rate-history

    Args:
        symbol (str, optional): the trading symbol
    Keyword Args:
        limit (int, optional): limit the results. Default 100; max 1000.
        startTime (int, optional): Start Time.
        endTime (int, optional): End Time.

    If startTime and endTime are not sent, the most recent limit datas are returned.
    If the number of data between startTime and endTime is larger than limit, return as startTime + limit.
    In ascending order.
    """
    
    params = {"symbol": symbol, **kwargs}
    return self.query("/fapi/v1/fundingRate", params)