public async Task OnetimeSetup()
        {
            base.OnetimeSetupShared();

            _expected = new GetTransactionsResponseV1();

            Service.Setup(s => s.GetTransactionsAsync(It.IsAny <GetTransactionsRequestV1>(), It.IsAny <CancellationToken>()))
            .ReturnsAsync(_expected);

            _result = await ClassInTest.GetTransactions(_input = new GetTransactionsRequestV1(), CancellationToken.None);
        }