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>()));
}