public async Task <IActionResult> LoadColdData()
        {
            await _importMetaDataService.ImportAllCurrencies();

            await _importMetaDataService.ImportAllExchanges();

            await _importMetaDataService.ImportAllExchangePairs();

            return(Ok());
        }
        public async Task ImportAllCurrencies()
        {
            await _coldImportTests.ImportAllCurrencies();

            var      context  = Context();
            Currency currency = await context.Currencies.FirstOrDefaultAsync(x => x.Symbol == "ETH");

            Assert.NotNull(currency);
            Assert.Equal("ETH", currency.Symbol);
        }