code: def _addArgs(a, b):
      if isinstance(b, list):
          if isinstance(a, list):
              if len(a) != len(b) or a[-1] != b[-1]:
                  raise ValueError()
              return [
                  _addArgs(va, vb) for va, vb in zip(a[:-1], b[:-1])
              ] + [a[-1]]
          else:
              a, b = b, a
      if isinstance(a, list):
          assert a[-1] == 1
          return [_addArgs(a[0], b)] + a[1:]
      return a + b
  
imports: from fontTools.cffLib import maxStackLimit
label_desc: Use image node_id 14 for calling a global function with example usage: _addArgs(a, b) and returns: unknown, unknown, unknown