code: def testHalfCauchyParamShapes(self):
      sample_shape = [10, 3, 4]
      self._test_param_shapes(sample_shape, sample_shape)
      self._test_param_shapes(tf.constant(sample_shape), sample_shape)
  
imports: import numpy
  from scipy import stats
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import half_cauchy
  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 _HalfCauchyTest obj's underlying member method code with example usage: obj.testHalfCauchyParamShapes() without return types