code: def linkcode_resolve(domain, info):
      """
      Determine the URL corresponding to Python object
      This code is from
      https://github.com/numpy/numpy/blob/master/doc/source/conf.py#L290
      and https://github.com/Lasagne/Lasagne/pull/262
      """
      if domain != "py":
          return None
  
      modname = info["module"]
      fullname = info["fullname"]
  
      submod = sys.modules.get(modname)
      if submod is None:
          return None
  
      obj = submod
      for part in fullname.split("."):
          try:
              obj = getattr(obj, part)
          except:
              return None
  
      try:
          fn = inspect.getsourcefile(obj)
      except:
          fn = None
      if not fn:
          return None
  
      try:
          source, lineno = inspect.getsourcelines(obj)
      except:
          lineno = None
  
      if lineno:
          linespec = "#L%d-L%d" % (lineno, lineno + len(source) - 1)
      else:
          linespec = ""
  
      filename = info["module"].replace(".", "/")
      return (
          "https://github.com/marcotcr/checklist/blob/master/%s.py%s"
          % (filename, linespec)
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: linkcode_resolve(domain, info) and returns: unknown, None, None, None, None