How to get username in createdBy property of contentfragment/folder when workflow is started by that user?

[sesmic]

Hi All,

I have business requirement where I'm creating folders & content fragment using the workflow.

So, for this I created one custom process step where I'm getting ResourceResolver after execute method as below:

try(ResourceResolver rr = workflowSession.adaptTo(ResourceResolver.class)){
    Resource cfModel = rr.getReource(cfmpath);
    FragmentTemplate ft = cfModel.adaptTo(FragmentTemplate.class);
    ContentFragment cf = ft.createFragment(folder, cfName, cfTitle);
}

This is working fine, but when I check CF's property jcr:createdBy="admin" is coming.

Instead, I want the user/account name who has triggered this workflow.

Could anyone please advise me as to how I get the desired result?

Many Thanks,

sesmic