def gather_session_requester(self, **kwargs):
addrs=[]
if 'session' in kwargs:
session = kwargs['session']
from ietf.meeting.models import SchedulingEvent
first_event = SchedulingEvent.objects.filter(session=session).select_related('by').order_by('time', 'id').first()
if first_event and first_event.status_id in ['appw', 'schedw']:
addrs.append(first_event.by.role_email('chair').address)
return addrs