Pre, Post (middle-ware) for update association API should be there

Hi,
i am working on some functionality where i require some post operation after the API created for association that internally call addOne method , but as i see there is middle-ware operation are only available for normal create , update but not for API created for association. So if someone need to do some work after the API like you provided post (middle-ware) how one can do the same in case of association API. Or i am wrong please correct me.

Thanks