code: def test_two_markdown_cell_with_no_language_code_works(
      nb=new_notebook(
          cells=[
              new_markdown_cell(
                  """```
  1 + 1
  ```"""
              ),
              new_markdown_cell(
                  """```
  2 + 2
  ```"""
              ),
          ]
      )
  ):
      text = jupytext.writes(nb, "md")
      nb2 = jupytext.reads(text, "md")
      compare_notebooks(nb2, nb)
  
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 30 for calling a global function with example usage: test_two_markdown_cell_with_no_language_code_works(nb) without return types