code: def estimate_belongs_test_data(self):
      return self.generate_random_data()
  
file_path: geomstats/tests/tests_geomstats/test_learning/data/expectation_maximization.py
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from ._base import BaseEstimatorTestData
label_desc: Use image node_id 1 for calling the RiemannianEMTestData obj's underlying member method code with example usage: obj.estimate_belongs_test_data() and returns: self