def METHOD_NAME(self, fx_code: str) -> fxPrices:
    """
    Get a historical series of FX prices
    :param fx_code: currency code, in the form EURUSD
    :return: fxData object
    """
    currency1, currency2 = get_fx_tuple_from_code(fx_code)
    if currency1 == currency2:
        # Trivial, just a bunch of 1's
        fx_data = DEFAULT_RATE_SERIES
    elif currency2 == DEFAULT_CURRENCY:
        # We ought to have data
        fx_data = self._get_standard_fx_prices(fx_code)
    elif currency1 == DEFAULT_CURRENCY:
        # inversion
        fx_data = self._get_fx_prices_for_inversion(fx_code)
    else:
        # Try a cross rate
        fx_data = self._get_fx_cross(fx_code)
    return fx_data