code: def model():
      model = Sequential()
      model.add(Conv2D(5, (4, 4), input_shape=(5, 5, 3)))
      model.compile()
      return model
  
file_path: hls4ml/test/pytest/test_conv2d_narrow.py
imports: from pathlib import Path
  import numpy
  import pytest
  from tensorflow.keras.layers import Conv2D
  from tensorflow.keras.models import Sequential
  import hls4ml
label_desc: Use image node_id 2 for calling a global function with example usage: model() and returns: model