Money.ExchangeRates.OpenExchangeRates.init
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init
, go back to Money.ExchangeRates.OpenExchangeRates module for more information.
Update the retriever configuration to include the requirements for Open Exchange Rates. This function is invoked when the exchange rate service starts up, just after the ets table :exchange_rates is created.
default_config
is the configuration returned byMoney.ExchangeRates.default_config/0
Returns the configuration either unchanged or updated with additional configuration specific to this exchange rates retrieval module.