code: def _compgen_filenames(type, ext):
      if not ext:
          return [f"!!{type}:*"]
      return [f"!!{type}:*.@({'|'.join(ext)})"]
  
imports: import os
label_desc: Use image node_id 15 for calling a global function with example usage: _compgen_filenames(type, ext) and returns: list, list