OTA code to check if a project is linked to project template

Hello All, 

I'm trying to write an OTA code which will check whether the project is linked to a template or not. 

I checked the Project Properties Object and also project descriptor objects examples in the OTA reference guide but it still doesn't give an option to check if the project is linked to a template. 

Can someone please refer me an example or advise me on how to retreive that information.

Thank you in advance. 

Chandra