如何在Elastic Search Java中实现上下文完成？

Question

我按照https://www.elastic.co/guide/en/elasticsearch/reference/current/suggester-context.html#suggester-context中的教程构建了索引。

PUT qs
{
    "mappings": {
        "questions" : {
            "properties" : {
                "suggest" : {
                    "type" : "completion",
                    "contexts": [
                        { 
                            "name": "domain",
                            "type": "category",
                            "path": "domain"
                        }
                    ]
                }
            }
        }
    }
}

对于每个问题，我都有

PUT qs/questions/1
{
    "suggest": {
        "input": ["a", "b", "c", "d"],
        "contexts": {
            "domain": ["domain1"] 
        },
        "weight" : 2
    }
}

最后，当我搜索时，我会使用

POST qs/_search?pretty
{
  "suggest": {
      "question-suggest" : {
          "prefix" : "实名",
          "completion" : {
              "field" : "suggest",
              "size": 100,
              "contexts": {
                "domain": [ 
                  { "context" : "小金库", "boost" : 1},
                  { "context" : "白条闪付", "boost": 4}
                ]
              }
          }
      }
  }
}

我想知道如何在Java中实现它？我已经尝试过

SearchResponse response = client.prepareSearch(esIndexName)
                .setQuery(QueryBuilders.wrapperQuery(queryString))
                .setTimeout(TimeValue.timeValueMillis(this.requestTimeout))
                .setExplain(false)
                .setSize(responseSize)
                .execute()
                .actionGet();

但这给了我一个例外

  

ParsingException [没有为[建议]注册的[查询]]

非常感谢您的帮助！