.setParams("count", "_count")方法不存在

非常抱歉，我的回答有误。确实，`setParams` 方法并不存在。如果需要使用 Script Query，可以使用以下代码：

import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.script.Script;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.composite.CompositeAggregationBuilder;
import org.elasticsearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;

SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

// 设置查询条件
searchSourceBuilder.query(QueryBuilders.boolQuery()
    .must(QueryBuilders.matchQuery("supplierNo", "C2217")));

// 设置返回结果数量
searchSourceBuilder.size(0);

// 禁用返回总命中数
searchSourceBuilder.trackTotalHits(false);

// 构建 composite 聚合
CompositeAggregationBuilder compositeAggregation = AggregationBuilders.composite("my_buckets")
    .size(10)
    .sources(
        AggregationBuilders.terms("erpGoodsId").field("erpGoodsId").order("asc"),
        AggregationBuilders.terms("batchNum").field("batchNum").order("asc"),
        AggregationBuilders.terms("wmsProductCode").field("wmsProductCode").missing("null").order("asc")
    );

// 构建 filter 聚合
FilterAggregationBuilder filterAggregation = AggregationBuilders.filter("filter_empty_dest",
    QueryBuilders.scriptQuery(new Script("params.count != null"))
        .setScriptParams(Map.of("count", "_count"))
);

// 将 filter 聚合作为 composite 聚合的子聚合
compositeAggregation.subAggregation(filterAggregation);

// 将 composite 聚合作为查询的聚合
searchSourceBuilder.aggregation(compositeAggregation);

以上代码中使用了 `Script` 类来构建脚本查询，并使用 `setScriptParams` 方法来设置脚本参数。这样可以在 Script Query 中使用 `_count` 参数。