Final cut pro Extension Development

Hello Everybody,

I don't know is it ok ask here or not ! but This is request to make.

If anyone who knows kindly guide me.

This been more than decade as a video editor. I want to make my extension.

Here, I am not talking about title and effects making from apple motion and publishing to fcp, That I know.

I am talking about extension.

Thanks Apple have public its documentation.

Again anyone who knows Please guide me in developing the extension.🙏