public async Task ShouldGetPendingTransactions()
        {
            // Arrange
            var getPendingTransactionsRequest = new GetPendingTransactionsRequest();

            //Act
            GetPendingTransactionsResponse getPendingTransactionsResponse =
                await Mediator.Send(getPendingTransactionsRequest);

            //Assert
            getPendingTransactionsResponse.ListOfPendingTransactions.Count.ShouldBe(10);
        }
        public async Task <GetPendingTransactionsApiResponse> Handle
        (
            GetPendingTransactionsApiRequest aGetPendingTransactionsApiRequest,
            CancellationToken aCancellationToken
        )
        {
            var getTransRequest = new GetPendingTransactionsRequest()
            {
                NumberOfTransactions = 10
            };

            GetPendingTransactionsResponse mockTransactionsResponse = await Mediator.Send(getTransRequest);

            return(new GetPendingTransactionsApiResponse {
                ListOfPendingTransactions = mockTransactionsResponse.ListOfPendingTransactions
            });
        }