code: def randX_20_15():
      return randX(20, 15)
  
file_path: hls4ml/test/pytest/test_keras_nested_model.py
imports: from pathlib import Path
  import numpy
  import pytest
  from tensorflow.keras.layers import Dense, Input
  from tensorflow.keras.models import Model, Sequential
  import hls4ml
label_desc: Use image node_id 4 for calling a global function with example usage: randX_20_15() and returns: randX