"_default_": {
  "_field_names": {
    "enabled": false
  },
  "properties": {
    "apache2": {
      "properties": {
        "access": {
          "properties": {
            "agent": {
              "type": "text"
            },
            "url": {
              "ignore_above": 1024,
              "type": "keyword"
            }
          }
        }
      }
    },
    "completion": {
      "type": "completion"
    }
  }
}