open-toontown/toontown/estate/DistributedEstateAI.py

from direct.directnotify import DirectNotifyGlobal
from direct.distributed.DistributedObjectAI import DistributedObjectAI

class DistributedEstateAI(DistributedObjectAI):
    notify = DirectNotifyGlobal.directNotify.newCategory('DistributedEstateAI')