public async Task Action_Calls_Handler()
        {
            var result = await _controller.ApplicationWithdrawnAfterAcceptance(_request);

            _mediator.Verify(x =>
                             x.Send(It.Is <ApplicationWithdrawnAfterAcceptanceCommand>(c => c.ApplicationId == _request.ApplicationId &&
                                                                                       c.PledgeId == _request.PledgeId &&
                                                                                       c.Amount == _request.Amount), It.IsAny <CancellationToken>()));
        }