Hello, this code works on NEST version="2.4.1"
var descriptor = new BulkDescriptor();
foreach (var item in updateList)
{
descriptor.Update<VendorProductSearchModel, PartialVendorProductStoreListUpdate>(a => a.Id(item.VendorProductId).Doc(item.PartialUpdate));
}
var resp = _client.Bulk(descriptor);