vRA 7.0.1 - Sync Directory via REST API/vRO

Hello,

I work on a vRO workflow that creates a BG, and takes AD Users and Groups names as Input.

I want to be able, through a vRO object or by REST API to the vra, to sync the directory after i add the users and groups to the sync list.

We do not sync all of our root directory because it is huge and we do not want to load on the vidm.

I've seen no REST calls or vRO objects that deal with this part of vRA.. am i missing something or i really can't script this task?

Thanks