| 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 |