code: def helper_param_static_shapes(self, sample_shape, expected):
      param_shapes = (
          two_piece_normal.TwoPieceNormal.param_static_shapes(
              sample_shape
          )
      )
      mu_shape = param_shapes["loc"]
      sigma_shape = param_shapes["scale"]
      skewness_shape = param_shapes["skewness"]
  
      self.assertEqual(expected, mu_shape)
      self.assertEqual(expected, sigma_shape)
      self.assertEqual(expected, skewness_shape)
  
imports: import itertools
  from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import two_piece_normal
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import gradient
label_desc: Use image node_id 4 for calling the _TwoPieceNormalTest obj's underlying member method code with example usage: obj.helper_param_static_shapes(sample_shape, expected) without return types