  from django.db.models.functions import Cast
  from django.db.utils import NotSupportedError
  from django.utils.functional import cached_property
  
  NUMERIC_TYPES = (int, float, Decimal)
  
 
</s> remove from django.test import TestCase, skipUnlessDBFeature
 </s> add from django.test import TestCase, ignore_warnings, skipUnlessDBFeature
from django.utils.deprecation import RemovedInDjango30Warning </s> remove         unsupported = {'BoundingCircle', 'ForceRHR', 'MemSize'}
 </s> add         unsupported = {'BoundingCircle', 'ForcePolygonCW', 'ForceRHR', 'MemSize'}
from django.utils.deprecation import RemovedInDjango30Warning
  from django.db.models.functions import Cast
  from django.db.utils import NotSupportedError
from django.utils.deprecation import RemovedInDjango30Warning
  from django.utils.functional import cached_property
  
  NUMERIC_TYPES = (int, float, Decimal)
  
keep add keep keep keep keep
 Fixed #28841 -- Added ForcePolygonCW GIS function and deprecated ForceRHR. 
django/contrib/gis/db/models/functions.py