code: def belongs_test_data(self):
      data = [
          dict(point=gs.eye(3), expected=gs.array(True)),
          dict(point=gs.ones((3, 3)), expected=gs.array(True)),
          dict(point=gs.ones(3), expected=gs.array(False)),
      ]
      return self.generate_tests(data)
  
imports: import random
  import geomstats.backend
  from geomstats.test.data import TestData
  from .base import VectorSpaceOpenSetTestData
  from .lie_group import MatrixLieGroupTestData
  from .matrices import MatricesMetricTestData
label_desc: Use image node_id 1 for calling the SquareMatrices3TestData obj's underlying member method code with example usage: obj.belongs_test_data() and returns: self