Can custom workflow code be aware of how WF was initiated? (submit, tt_data, ...)

System

Is there a variable accessible by the workflow custom code that I can check to see what initiated the workflow (submit, tt_data, new job, ...) ?

I recently discovered that our files marked "private" were being deployed to production when using "tt_data" and had to implement custom logic in our workflows to remove the "private" files from the workflow.

We use the same workflow weather we are submitting / deploying one file or several thousand, and the additional check of the "private" flag will cause the workflow to take much longer when having to process thousands of files.

My install is on TS 6.7.1 - Windows.