Returns the intraday exchange rate for any pair of physical
        currency (e.g., EUR) or physical currency (e.g., USD).

        Keyword Arguments:
            from_symbol: The currency you would like to get the exchange rate
                for.
                For example: from_currency=EUR or from_currency=USD.
            to_symbol: The destination currency for the exchange rate.
                For example: to_currency=USD or to_currency=JPY.
            interval:  time interval between two conscutive values,
                supported values are '1min', '5min', '15min', '30min', '60min'
                (default '15min')
            outputsize:  The size of the call, supported values are
                'compact' and 'full; the first returns the last 100 points in the
                data series, and 'full' returns the full-length intraday times
                series, commonly above 1MB (default 'compact')

def get_currency_exchange_intraday(self, from_symbol, to_symbol, interval='15min', outputsize='compact'):
        """ Returns the intraday exchange rate for any pair of physical
        currency (e.g., EUR) or physical currency (e.g., USD).

        Keyword Arguments:
            from_symbol: The currency you would like to get the exchange rate
                for.
                For example: from_currency=EUR or from_currency=USD.
            to_symbol: The destination currency for the exchange rate.
                For example: to_currency=USD or to_currency=JPY.
            interval:  time interval between two conscutive values,
                supported values are '1min', '5min', '15min', '30min', '60min'
                (default '15min')
            outputsize:  The size of the call, supported values are
                'compact' and 'full; the first returns the last 100 points in the
                data series, and 'full' returns the full-length intraday times
                series, commonly above 1MB (default 'compact')
        """
        _FUNCTION_KEY = 'FX_INTRADAY'
        return _FUNCTION_KEY, "Time Series FX ({})".format(interval), 'Meta Data'