Requests an fxRate creation.
The fxRate create request.
A promise that resolves to the created fxRate.
Retrieves an fxRate.
The id of the fxRate.
A promise that resolves to the created fxRate.
StaticgetFunction
Retrieves the singleton instance of the CurrencyExchangeService class.
The singleton instance of the CurrencyExchangeService class.
Service class for managing currency exchange related operations.