public async Task <ActionResult <ICollection <SessionResponse> > > GetByConference(int conferenceId, DateTimeOffset?fromDate = null,
DateTimeOffset?toDate = null)
{
fromDate = fromDate ?? DateTimeOffset.MinValue;
toDate = toDate ?? DateTimeOffset.MaxValue;
return((await _sessionsRepository.GetByConferenceIdAsync(conferenceId))
.Where(s => IsSessionWithinDateRange(fromDate, toDate, s))
.Select(m => m.MapSessionResponse())
.ToList());
}
