code: def suggest(self, body, index=None):
      if index is not None and index not in self.__documents_dict:
          raise NotFoundError(
              404, f"IndexMissingException[[{index}] missing]"
          )
  
      result_dict = {}
      for key, value in body.items():
          text = value.get("text")
          suggestion = (
              int(text) + 1
              if isinstance(text, int)
              else f"{text}_suggestion"
          )
          result_dict[key] = [
              {
                  "text": text,
                  "length": 1,
                  "options": [
                      {"text": suggestion, "freq": 1, "score": 1.0}
                  ],
                  "offset": 0,
              }
          ]
      return result_dict
  
imports: from __future__ import annotations
  import fnmatch
  import json
  from elasticsearch import Elasticsearch
  from elasticsearch.exceptions import NotFoundError
  from .utilities import MissingIndexException, get_random_id, query_params
label_desc: Use image node_id 13 for calling the FakeElasticsearch obj's underlying member method code with example usage: obj.suggest(body, index) and returns: result_dict