public async Task ClearDatabase()
{
await AccountRepository.Clear();
await CallRepository.Clear();
CallCudOperation?.Invoke(this, new ResourceCudOperationEventArgs <Call>(null, ResourceCudOperation.Reset));
await ConferenceRepository.Clear();
ConferenceCudOperation?.Invoke(this, new ResourceCudOperationEventArgs <Conference>(null, ResourceCudOperation.Reset));
await ConferenceParticipantRepository.Clear();
ConferenceParticipantCudOperation?.Invoke(this, new ResourceCudOperationEventArgs <ConferenceParticipant>(null, ResourceCudOperation.Reset));
await AlertRepository.Clear();
AlertCudOperation?.Invoke(this, new ResourceCudOperationEventArgs <Alert>(null, ResourceCudOperation.Reset));
await ActivityLogRepository.Clear();
ActivityLogCudOperation?.Invoke(this, new ResourceCudOperationEventArgs <ActivityLog>(null, ResourceCudOperation.Reset));
}