code: def test_indented_code_is_not_split():
      text = """Here we have a markdown
  file with an indented code cell
  
      1 + 1
  
  
      2 + 2
  
  the code cell should not become a Jupyter cell,
  nor be split into two pieces."""
      nb = jupytext.reads(text, "md")
      compare(nb.cells[0].source, text)
      assert nb.cells[0].cell_type == "markdown"
      assert len(nb.cells) == 1
  
imports: from nbformat.v4.nbbase import new_code_cell, new_markdown_cell, new_notebook, new_raw_cell
  import jupytext
  from jupytext.combine import combine_inputs_with_outputs
  from jupytext.compare import compare, compare_cells, compare_notebooks
label_desc: Use image node_id 19 for calling a global function with example usage: test_indented_code_is_not_split() without return types