code: def four_by_four_volume():
      # This constant computed as tf.exp(lkj.log_norm_const(4, [1.0]))
      return 11.6973076
  
file_path: probability/tensorflow_probability/python/distributions/internal/correlation_matrix_volumes_test.py
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions.internal import correlation_matrix_volumes_lib
  from tensorflow_probability.python.distributions.internal import statistical_testing
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 3 for calling a global function with example usage: four_by_four_volume() and returns: int