code: def against_default_test_data(self):
      return self.generate_tests(
          [
              dict(
                  n_points=random.randint(2, 10),
                  n_reps=random.randint(2, 5),
              )
          ]
      )
  
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 BatchGradientDescentTestData obj's underlying member method code with example usage: obj.against_default_test_data() and returns: self