4.x: programmatically control media providers with Nima WebServer

[barchetta]

While working on migrating the Bookstore test application to Nima WebServer I ran into a gap (or maybe it is ignorance on my part).

In 3.x I can add specific media support programmatically:

webserverBuilder.addMediaSupport(JsonpSupport.create());

I can't find a way to do that with Nima WebServer. Maybe I'm missing something but it seems to rely only on service loading of MediaSupportProviders.

Note that this is different than Features which have useSystemServices() to turn on/off auto loading of services and there are ways to programmatically add a feature using addFeature.

[Tomas-Kraus]

I'll have a look at this one.

[Tomas-Kraus]

Looks like you are right. MediaContextImpl in nima builds media providers using service loader. There is also a way to set your own MediaContext using WebServer builder, but you have to write it yourself.
Also MediaContext in nima and MediaContext in reactive are disjunct classes, they have no common ancestor.
The same with MediaSupport (reactive) vs. MediaSupportProvider (nima/media).

So we have two separate worlds. Fortunately there is a direct conenction between MediaSupport and MediaSupportProvider and looks like I can just add some builder method to manually register MediaSupportProvider during the build process.
But builder API won't be identical to reactive server builder. I'll use the same pattern that I made for content encoders and which was already reviewed and approved for nima.