如何在 在创建索引时 指定 token filter 有指定自定义分词插件中的token filter么？？

写了分词插件，里面开放了 token filter

@Override public Map<String, AnalysisModule.AnalysisProvider<TokenFilterFactory>> getTokenFilters(){ Map<String, AnalysisModule.AnalysisProvider<TokenFilterFactory>> extra = new HashMap<>(); extra.put("ngram_search_number_tokenFilter", FactminrTokenFilterFactory::getSearchNumberTokenFilterFactory); extra.put("ngram_merge_number_tokenFilter", FactminrTokenFilterFactory::getMergeNumberTokenFilterFactory); return extra; }
 
但是在客户端创建索引时，指定，无法创建索引
 "analysis": {
      "analyzer": {
        "ngram_merge_number_test": {
          "tokenizer": "ngram_ch_tokenizer",
          "filter": [
            "ngram_merge_number_tokenFilter"
          ],
          "char_filter": [
            "ngram_stop",
            "ngram_ignore"
          ],
          "type": "custom"
        }
      },
 
 
报错信息：
{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Custom Analyzer [ngram_merge_number_test] failed to find filter under name [ngram_merge_number_tokenFilter]"}],"type":"illegal_argument_exception","reason":"Custom Analyzer [ngram_merge_number_test] failed to find filter under name [ngram_merge_number_tokenFilter]"},"status":400}