public TradeProvider()
{
_stockQuoteProvider = new StockQuoteProvider();
}
public StockQuoteMiddleware(RequestDelegate next, ILogger <StockQuoteMiddleware> logger, StockQuoteProvider stockQuoteProvider)
{
_next = next ?? throw new ArgumentNullException(nameof(next));
_logger = logger;
_stockQuoteProvider = stockQuoteProvider;
}
