bbk_data                Returns Bundesbank data for a given flow and
                        key
bbk_metadata            Returns the available Bundesbank metadata
bbk_series              Returns the Bundesbank time serie that is found
                        with the specified time series key
ecb_data                Returns ECB data for a given flow and key
ecb_euro_rates          Euro foreign exchange reference rates
ecb_metadata            Returns the available ECB metadata
snb_data                Returns Swiss National Bank (SNB) data for a
                        given id
