code: def onDocstring(app, what, name, obj, options, lines):
      if not lines:
          return
      if lines[0].startswith("Alias for field number"):
          # strip useless namedtuple number fields
          del lines[:]
  
label_desc: Use image node_id 1 for calling a global function with example usage: onDocstring(app, what, name, obj, options, lines) without return types