code: def tangent_space(self, x):
      del x
      return spherical.SphericalSpace()
  
imports: from absl.testing import parameterized
  import numpy
  import scipy.special
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import exp
  from tensorflow_probability.python.bijectors import scale
  from tensorflow_probability.python.bijectors import scale_matvec_tril
  from tensorflow_probability.python.experimental.tangent_spaces import spaces_test_util
  from tensorflow_probability.python.experimental.tangent_spaces import spherical
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 3 for calling the _SpheresTest obj's underlying member method code with example usage: obj.tangent_space(x) and returns: spherical