code: def plus_one_v2(digits):
      n = len(digits)
      for i in range(n - 1, -1, -1):
          if digits[i] < 9:
              digits[i] += 1
              return digits
          digits[i] = 0
      digits.insert(0, 1)
      return digits
  
label_desc: Use image node_id 2 for calling a global function with example usage: plus_one_v2(digits) and returns: digits, digits