如何在elasticsearch中获取嵌套字段的不同值？

{
  "query": {
    "nested": {
      "path": "nested_field",
      "query": {
        "bool": {
          "must": [
            {
              "term": {
                "nested_field.field1": "value1"
              }
            },
            {
              "term": {
                "nested_field.field2": "value2"
              }
            }
          ]
        }
      }
    }
  },
  "aggs": {
    "nested_field_values": {
      "nested": {
        "path": "nested_field"
      },
      "aggs": {
        "distinct_values": {
          "terms": {
            "field": "nested_field.field3"
          }
        }
      }
    }
  }
}