[
  {
    "query": "device.family:\"\"",
    "result": [
      {"type": "spaces", "value": ""},
      {
        "type": "filter",
        "filter": "text",
        "negated": false,
        "key": {"type": "keySimple", "value": "device.family", "quoted": false},
        "operator": "",
        "value": {"type": "valueText", "value": "", "quoted": true}
      },
      {"type": "spaces", "value": ""}
    ]
  },
  {
    "query": "device.family:",
    "result": [
      {"type": "spaces", "value": ""},
      {
        "type": "filter",
        "filter": "text",
        "negated": false,
        "invalid": {
          "type": "filter-must-have-value",
          "reason": "Filter must have a value"
        },
        "key": {"type": "keySimple", "value": "device.family", "quoted": false},
        "operator": "",
        "value": {"type": "valueText", "value": "", "quoted": false}
      },
      {"type": "spaces", "value": ""}
    ]
  }
]