code: def delex(cls, text, slots):
      delex = text
      for slot, value in slots.items():
          if isinstance(value, str):
              delex = delex.replace(value, f"[{slot}]")
          else:
              for v in value:
                  delex = delex.replace(v, f"[{slot}]")
      return delex
  
imports: from enum import Enum
  from typing import List, Dict
  from dataclasses import dataclass, field
  from collections.abc import Iterable
  from parlai.utils.misc import warn_once
label_desc: Use image node_id 1 for calling the SerializationHelpers obj's underlying member method code with example usage: obj.delex(cls, text, slots) and returns: delex