I am a beginner with building packages. This looks like what I need. I am adding possibly thousands of projectitems to the project at once. What interfaces would I be using to be able to use these optimizations?
This post is about people providing custom project systems, it wouldn't do anything if you were interacting with a project system. I don't know if there is an optimal way to add 'thousands of projectitems', that likely isn't a mainline scenario that the
APIs were designed for.