In THIS article, the following is stated:
The Publish process and the Transport process can both be extended using the IPublishTransactionHandler and ITransportPackageItemHandler interfaces respectively.
My question is, are these extension points still available in 8 or 8.5 (the official docs only mention custom resolvers and custom renderers)? If yes, where can I find these interfaces and where should they be plugged into?
Looking at the 2011 chm files, I am unable to find them. In SDL Tridion 2011 Content Delivery ASP.NET API there is a
Com.Tridion.Distribution.Transport.Transaction namespace which sounds promising, but looking at the members I can't find anything useful. Nor do I see the interfaces in any of the 8.5 API-s.