code: def variance_repeated_is_zero_test_data(self):
      return self.generate_random_data()
  
imports: import random
  import geomstats.backend
  from geomstats.test.data import TestData
  from ._base import BaseEstimatorTestData, MeanEstimatorMixinsTestData
label_desc: Use image node_id 1 for calling the VarianceTestData obj's underlying member method code with example usage: obj.variance_repeated_is_zero_test_data() and returns: self