code: def test_combine_stable(ipynb_file):
      nb_org = jupytext.read(ipynb_file)
      nb_source = deepcopy(nb_org)
      nb_outputs = deepcopy(nb_org)
  
      for cell in nb_source.cells:
          cell.outputs = []
  
      nb_source = combine_inputs_with_outputs(nb_source, nb_outputs)
      compare_notebooks(nb_source, nb_org)
  
file_path: jupytext/tests/functional/others/test_combine.py
imports: from copy import deepcopy
  from nbformat.v4.nbbase import new_code_cell, new_markdown_cell, new_notebook
  import jupytext
  from jupytext.combine import combine_inputs_with_outputs
  from jupytext.compare import compare, compare_notebooks
label_desc: Use image node_id 3 for calling a global function with example usage: test_combine_stable(ipynb_file) without return types