Project API : Main version of a project

Hi,

 

Actually I use the Project API (GET /export resource) to retrieve all versions of a project (using versionExports properties).

I'm looking for a way to dynamically retrieve a main version (and not default version) of a project which have few versions ?

For example : My project have 4 versions : default, v1, v2, and v3. And considering that v2 version is my main version.

- Is there a existing property to do this ? 

- Is the versionExports property (from the GET /export resource response) have this notion ?

Or else

- the only way, I have, is that I consider the default version as my main version ?

 

David