code: def test_main_formats_support_cell_metadata(fmt):
      if fmt == "md:myst" and not is_myst_available():
          pytest.skip("myst is not available")
      assert fmt in set(formats_with_support_for_cell_metadata())
  
imports: import pytest
  from nbformat.v4.nbbase import new_code_cell, new_markdown_cell
  from jupytext import reads, writes
  from jupytext.formats import formats_with_support_for_cell_metadata, is_myst_available
label_desc: Use image node_id 2 for calling a global function with example usage: test_main_formats_support_cell_metadata(fmt) without return types