code: def utf16decode(x):
      """Decode an escaped utf8-encoded string"""
      y = ""
      state = -1
      for z in x:
          if state == -1:
              if z == "\\":
                  state = 0
              else:
                  y += str(z)
          elif state == 0:
              if z == "u":
                  state = 1
                  acc = ""
              else:
                  y += str(z)
                  state = -1
          elif state < 4:
              state += 1
              acc += z
          else:
              state = -1
              y += chr(int(acc + z, 16))
      return y
  
label_desc: Use image node_id 1 for calling a global function with example usage: utf16decode(x) and returns: y