My use case:
PTC Plugin checkpoints project and then creates the workspace.
Jenkins performs the build and tests.
I then have a manual promotion step to approve the build.
On that promotion, I then want to label the checkpoint to indicate it is approved.

So I could do with an action to add a label to the checkpoint that was created (I believe that the checkpoint reference is stored in an environment variable already).

Hopefully you can implement this for me?