Money.ExchangeRates.get_historic_rates

You're seeing just the callback get_historic_rates, go back to Money.ExchangeRates module for more information.
Link to this callback

get_historic_rates(arg1, config)

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Specs

get_historic_rates(Date.t(), config :: Money.ExchangeRates.Config.t()) ::
  {:ok, map()} | {:error, binary()}

Invoked to return the historic exchange rates from the configured exchange rate retrieval service.

  • config is an %Money.ExchangeRataes.Config{} struct

Returns {:ok, map_of_historic_rates} or {:error, reason}