code: def polygon(self):
              '''return a polygon for the fence'''
              points = []
              for fp in self.points[1:]:
                      points.append((fp.lat, fp.lng))
              return pointf polygon(self):
              '''return a polygon for the fence'''
              points = []
              for fp in self.points[1:]:
                      points.append((fp.lat, fp.lng))
              return points
docs: return a polygon for the fence