With the old Install package format, it was possible to set a Visio as protocol default in the manifest like this:

<Visios>
  <Visio>
    <RepoPath>Visios\Generic\Protocols\Skyline\My Protocol</RepoPath>
    <Version>
      <Selection>
        <Range rangeSelection="latestBuild">1.0.0.X</Range>
      </Selection>
      <SetAsActive>true</SetAsActive>
      <SetAsDefault>true</SetAsDefault>
    </Version>
  </Visio>
</Visios>

I'm now switching over to the Skyline SDK style deployment package, but this doesn't seem to be possible anymore.

I guess it will now need to be done with a custom step in the package install script?
Did anyone do this already or could someone point me to the correct method to set this up?