code: def _addindent(s_, num_spaces):
      s = s_.split("\n")
      # don't do anything for single-line stuff
      if len(s) == 1:
          return s_
      first = s.pop(0)
      s = [(num_spaces * " ") + line for line in s]
      s = "\n".join(s)
      s = first + "\n" + s
      return s
  
imports: from typing import List
label_desc: Use image node_id 1 for calling a global function with example usage: _addindent(s_, num_spaces) and returns: s, s_