code: def test_belongs(self, space_args, points, expected):
      space = self.testing_data._PointSet(*space_args)
      self.assertAllClose(space.belongs(points), expected)
  
imports: from collections.abc import Iterable
  import geomstats.backend
  from geomstats.test.test_case import TestCase
label_desc: Use image node_id 3 for calling the PointSetTestCase obj's underlying member method code with example usage: obj.test_belongs(space_args, points, expected) without return types