public void addMeeting(String name, String location, string date, int maxNumberOfParticipants)
        {
            if (meetingsRepository.getMeetingsByName(name) != null)
            {
                return;
            }

            var meeting = meetingFactory.create(name, location, date, maxNumberOfParticipants);

            if (meeting != null)
            {
                meetingsRepository.addMetting(meeting);
            }
        }