public ProviderSiteViewModel CreateProviderSiteRelationship(ProviderSiteViewModel viewModel, int providerId)
        {
            var providerSiteRelationship = new ProviderSiteRelationship
            {
                ProviderId     = providerId,
                ProviderSiteId = viewModel.ProviderSiteId,
                ProviderSiteRelationShipTypeId = viewModel.ProviderSiteRelationshipType
            };

            _providerService.CreateProviderSiteRelationship(providerSiteRelationship);

            return(GetProviderSiteViewModel(viewModel.ProviderSiteId));
        }