code: def pytest_collection_modifyitems(
      items: list[_pytest.nodes.Item],
  ) -> None:
      for item in items:
          if iscoroutinefunction(item.obj):
              item.add_marker(pytest.mark.asyncio)
  
imports: from __future__ import annotations
  from inspect import iscoroutinefunction
  import _pytest
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: pytest_collection_modifyitems(items) without return types