def gather_doc_discussing_ads(self, **kwargs):
addrs=[]
if 'doc' in kwargs:
doc = kwargs['doc']
active_ballot = doc.active_ballot()
if active_ballot:
for balloter, pos in active_ballot.active_balloter_positions().items():
if pos and pos.pos_id == "discuss":
addrs.append(balloter.role_email("ad").address)
return addrs