code: def deprecated_func():
      """Do something."""
      pass
  
imports: import webbrowser
  import pytest
  from mne import grade_to_tris, open_docs
  from mne.utils import catch_logging, copy_doc, copy_function_doc_to_method_doc, deprecated, deprecated_alias, legacy, linkcode_resolve
label_desc: Use image node_id 3 for calling a global function with example usage: deprecated_func() without return types