code: def unicode_string(string):
      if isinstance(string, text_type):
          return string
      if isinstance(string, bytes):
          return string.decode("utf8")
      if isinstance(string, newstr):
          return text_type(string)
      if isinstance(string, newbytes):
          string = bytes(string).decode("utf8")
  
      raise TypeError(
          "Cannot convert %s into unicode string" % type(string)
      )
  
imports: from __future__ import unicode_literals
  import importlib
  import json
  import numbers
  import re
  from builtins import bytes, str
  from datetime import datetime
  from functools import wraps
  from pathlib import Path
  from future.utils import text_type
  from snips_nlu.constants import END, ENTITY_KIND, RES_MATCH_RANGE, RES_VALUE, START
  from snips_nlu.exceptions import NotTrained, PersistingError
label_desc: Use image node_id 7 for calling a global function with example usage: unicode_string(string) and returns: string, string, text_type