public string AddRetentionPolicy(string tenantName, string productName, string componentName, ComponentRetention retention) { List <TenantConfiguration> tenants = TenantIOReader.ReadTenantsFromConfigFile(); var tenant = tenants.Find(x => x.Name == tenantName); if (tenant == null) { return(null); } var product = tenant.Products.Find(x => x.Name == productName); if (product == null) { return(null); } var component = product.Components.Find(x => x.Name == componentName); if (component == null) { return(null); } component.Settings.RetentionPolicy = retention; // store token in memory! _tenantRepository.AddComponentRetention(tenantName, productName, componentName, retention); // Write into file if (TenantIOWriter.WriteTenantsConfiguration(tenants) == true) { return(retention.Name); } return(null); }