code: def setup_method(self):
      if not hasattr(self, "data_generator"):
          self.data_generator = RandomDataGenerator(self.total_space)
  
      if not hasattr(self, "base_data_generator"):
          self.base_data_generator = RandomDataGenerator(self.base)
  
imports: import pytest
  import geomstats.backend
  from geomstats.geometry.fiber_bundle import FiberBundle
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.special_orthogonal import SpecialOrthogonal
  from geomstats.test.random import RandomDataGenerator
  from geomstats.test.test_case import TestCase
  from geomstats.test.vectorization import generate_vectorization_data
label_desc: Use image node_id 1 for calling the FiberBundleTestCase obj's underlying member method code with example usage: obj.setup_method() without return types