code: def testMeanDim3(self):
      self.VerifyMean(dim=3)
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import beta
  from tensorflow_probability.python.distributions import spherical_uniform
  from tensorflow_probability.python.distributions.internal import statistical_testing
  from tensorflow_probability.python.internal import assert_util
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.stats import sample_stats
label_desc: Use image node_id 8 for calling the _SphericalUniformTest obj's underlying member method code with example usage: obj.testMeanDim3() without return types