Searchkick autocomplete by token

model.rb

searchkick autocomplete: ["name"], 
    settings: {
      analysis: {
        analyzer: {
          searchkick_keyword: {
            type: "custom",
            tokenizer: "keyword",
            filter: ["lowercase", "snowball"]
          },
          default_index: {
            type: "custom",
            tokenizer: "standard",
            # synonym should come last, after stemming and shingle
            # shingle must come before snowball
            filter: ["standard", "lowercase", "asciifolding", "stop", "searchkick_index_shingle", "snowball"]
          },
          searchkick_search: {
            type: "custom",
            tokenizer: "standard",
            filter: ["standard", "lowercase", "asciifolding", "stop", "searchkick_search_shingle", "snowball"]
          },
          searchkick_search2: {
            type: "custom",
            tokenizer: "standard",
            filter: ["standard", "lowercase", "asciifolding", "stop", "snowball"]
          },
          searchkick_autocomplete_index: {
            type: "custom",
            tokenizer: "standard",
            filter: [ "standard", "lowercase", "asciifolding", "searchkick_autocomplete_ngram" ]
          },
          searchkick_autocomplete_search: {
            type: "custom",
            tokenizer: "standard",
            filter: [ "standard", "lowercase", "asciifolding"]
          },
          searchkick_suggest_index: {
            type: "custom",
            tokenizer: "standard",
            filter: ["lowercase", "asciifolding", "searchkick_suggest_shingle"]
          }
        },
        filter: {
          searchkick_autocomplete_ngram: {
            type: "edgeNGram",
            max_gram: 15,
            min_gram: 1 
          },
          searchkick_index_shingle: {
            type: "shingle",
            token_separator: ""
          },
          # lucky find http://web.archiveorange.com/archive/v/AAfXfQ17f57FcRINsof7
          searchkick_search_shingle: {
            type: "shingle",
            token_separator: "",
            output_unigrams: false,
            output_unigrams_if_no_shingles: true
          },
          searchkick_suggest_shingle: {
            type: "shingle",
            max_shingle_size: 5
          }
        },
      }
    }