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);
}