public async Task <Region> CreateAsync(Region region)
        {
            region.DocumentId         = null;
            region.IsHealthy          = true;
            region.DateOfRegistration = DateTime.UtcNow;
            region.LastModifiedDate   = DateTime.UtcNow;

            var response = await _documentDbProvider.CreateRegionAsync(region);

            return(response.StatusCode == HttpStatusCode.Created ? (dynamic)response.Resource : null);
        }