code: def test_compute_exp_std_skewness(
      self, probabilities, expected_result
  ):
      result = poisson_binomial.compute_exp_std_skewness(probabilities)
      self.assertSequenceAlmostEqual(expected_result, result)
  
file_path: pipelinedp/analysis/tests/poisson_binomial_test.py
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  from analysis import poisson_binomial
label_desc: Use image node_id 2 for calling the PoissonBinomialTest obj's underlying member method code with example usage: obj.test_compute_exp_std_skewness(probabilities, expected_result) without return types