changing clip in and out points using project metadata

In a question asked here before, a user asked how to change a clip's in and out points, and/or it's start and end points in a sequence.

There was a very short answer - "no."

There's the modifyProjectMetadata example in PProPanel, could it be used to change an inPoint in a projectItem,

so that one could later put the project in a sequence, with the specified in and out points?

Thanks