django1/django/contrib/gis/db/models/aggregates.py

from django.db.models import Aggregate


class Collect(Aggregate):
    name = 'Collect'


class Extent(Aggregate):
    name = 'Extent'


class Extent3D(Aggregate):
    name = 'Extent3D'


class MakeLine(Aggregate):
    name = 'MakeLine'


class Union(Aggregate):
    name = 'Union'