Building tree can have branches?

In EDB can you have a building branch at some point so that one level has two potential upgrades?

So something along the lines of:

Code:

---

building b1
{
    levels b1, b2, b2a, b3, b3a
    {
        b1 requires factions { barbarian, carthaginian, eastern, parthia, egyptian, greek, roman, }
        {
            capability
            {
                something
            }
            construction  2
            cost  600
            settlement_min town
            upgrades
            {
                b2
                b2a
            }
        }
        b2 requires factions { barbarian, carthaginian, eastern, parthia, egyptian, greek, roman, }
        {
            capability
            {
                something
            }
            construction  2
            cost  600
            settlement_min town
            upgrades
            {
                b3
            }
        }
        b2a requires factions { barbarian, carthaginian, eastern, parthia, egyptian, greek, roman, }
        {
            capability
            {
                something
            }
            construction  2
            cost  600
            settlement_min town
            upgrades
            {
                b3a
            }
        }
 
etc....

---

Yeah, that's entirely possible. If you only have one path open to some factions but not all it can cause problems. None you can't get around, but if you get error messages, sometimes you have to add a "and not..." into the requirement lines (include a false hidden resource you don't put in any province, like this: and not hidden_resource not_here). That will allow paths of building complexes to split off for different factions.

For more information see Black Crow's initial investigation into this (again, this is linked in the EDB Guide under 'Building Trees') - here's the direct link to the thread: https://forums.totalwar.org/vb/showthread.php?t=56549

Thanks, much appreciated.