old_contents: from rest_framework import status, viewsets
  from rest_framework.response import Response
  
  from utm_zone_info.coordinate_reference_system import utm_zones_for_representing
  from utm_zone_info.serializers import GeometrySerializer
  
  
  class UTMZoneInfoViewSet(viewsets.ViewSet):
      """
      A simple ViewSet for posting Points and returns valid utm_zones.
      """
  
      serializer_class = GeometrySerializer
  
      def create(self, request):
          serializer = self.serializer_class(data=request.data)
          if serializer.is_valid():
              geometry = serializer.validated_data['geom']
              if geometry.srid is None:
                  geometry.srid = serializer.validated_data['srid']
              data = dict(
                  utm_zone_srids=[zone.srid for zone in utm_zones_for_representing(geometry)]
              )
              return Response(data=data)
          else:
              return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
  
new_contents: from rest_framework import status, viewsets
  from rest_framework.response import Response
  
  from utm_zone_info.coordinate_reference_system import utm_zones_for_representing
  from utm_zone_info.serializers import GeometrySerializer
  
  
  class UTMZoneInfoViewSet(viewsets.ViewSet):
      """
      A simple ViewSet accepting Points and returning valid utm_zones.
      """
  
      serializer_class = GeometrySerializer
  
      def create(self, request):
          serializer = self.serializer_class(data=request.data)
          if serializer.is_valid():
              geometry = serializer.validated_data['geom']
              if geometry.srid is None:
                  geometry.srid = serializer.validated_data['srid']
              data = dict(
                  utm_zone_srids=[zone.srid for zone in utm_zones_for_representing(geometry)]
              )
              return Response(data=data)
          else:
              return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
  
subject: fix grammer in UTMZoneInfoViewSet docstring