都使用一个ik分词器的情况下，想要对不同索引定义不同停用词词典如何做？

PUT my-index-001

{

  "settings": {

    "analysis": {

      "char_filter": { # 自定义char_filter

        "and_char_filter": {

          "type": "mapping",

          "mappings": ["& => and"] # 将 '&' 转换为 'and'

        }

      },

      "filter": { # 自定义 filter

        "an_stop_filter": {

          "type": "stop",

          "stopwords": ["an"] # 设置 "an" 为停用词

        }

      },

      "analyzer": { # 自定义分词器为 custom_analyzer

        "custom_analyzer": {

          "type": "custom",

          # 使用内置的html标签过滤和自定义的my_char_filter

          "char_filter": ["html_strip", "and_char_filter"],

          "tokenizer": "standard",

          # 使用内置的lowercase filter和自定义的my_filter

          "filter": ["lowercase", "an_stop_filter"]

        }

      }

    }

  }

}