bimserver

Hi,

I'd like the bimserver to check model persistence.
When I (user A) check out a model, and another user does that too (user B),
we both work at the same time (concurrent) on the model.
When user B uploads his new revision of the model it will 'just' have a
new revision number.
When I (user A) upload my changed model, I would like the server to detect
that there is a newer revision than the one I started with.
I want a warning (including the link to download the new model). This way I
can integrate the changes from user B.
This looks the most easy way to keep the data persistence.

Kind regards,
user A