How to Move Keyframes Along the Timeline Using the Sequencer Scripting Plugin?

I’m trying to create a custom Editor Utility Widget that can import camera tracks and adjust the start frame so it can begin at 1001 for certain shots. I have gone down the Sequencer Scripting route and can import the keyframes and get to the keyframe float level, but I can’t seem to figure out how to adjust all imported keyframes to transform along the timeline.

@Taos.Whittaker Did you ever have any luck with this? I’m sorta/kinda trying to do something similar.