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.
StaticgetFunctionRetrieves the singleton instance of the CurrencyExchangeService class.
The singleton instance of the CurrencyExchangeService class.
Service class for managing currency exchange related operations.