[
  {
    "id": "$setField baseline",
    "operator": "$setField",
    "kind": "baseline",
    "operand": "all",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": 1
      }
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField field: null",
    "operator": "$setField",
    "kind": "null",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: missing",
    "operator": "$setField",
    "kind": "missing",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: zero",
    "operator": "$setField",
    "kind": "zero",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: negative",
    "operator": "$setField",
    "kind": "negative",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: decimal",
    "operator": "$setField",
    "kind": "decimal",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: numeric string",
    "operator": "$setField",
    "kind": "numeric string",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "bson": "{\"v\": {\"12\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField field: text",
    "operator": "$setField",
    "kind": "text",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "bson": "{\"v\": {\"hello\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField field: empty string",
    "operator": "$setField",
    "kind": "empty string",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "bson": "{\"v\": {\"\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField field: boolean",
    "operator": "$setField",
    "kind": "boolean",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: false",
    "operator": "$setField",
    "kind": "false",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: typed date",
    "operator": "$setField",
    "kind": "typed date",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: decimal128",
    "operator": "$setField",
    "kind": "decimal128",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: empty array",
    "operator": "$setField",
    "kind": "empty array",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: numeric array",
    "operator": "$setField",
    "kind": "numeric array",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: mixed array",
    "operator": "$setField",
    "kind": "mixed array",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: nested array",
    "operator": "$setField",
    "kind": "nested array",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: empty object",
    "operator": "$setField",
    "kind": "empty object",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: object",
    "operator": "$setField",
    "kind": "object",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField field: ISO date string",
    "operator": "$setField",
    "kind": "ISO date string",
    "operand": "field",
    "expression": {
      "$setField": {
        "field": "$probe",
        "input": {},
        "value": 1
      }
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "bson": "{\"v\": {\"2026-01-15T15:00:00Z\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField input: null",
    "operator": "$setField",
    "kind": "null",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: missing",
    "operator": "$setField",
    "kind": "missing",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: zero",
    "operator": "$setField",
    "kind": "zero",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: negative",
    "operator": "$setField",
    "kind": "negative",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: decimal",
    "operator": "$setField",
    "kind": "decimal",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: numeric string",
    "operator": "$setField",
    "kind": "numeric string",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: text",
    "operator": "$setField",
    "kind": "text",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: empty string",
    "operator": "$setField",
    "kind": "empty string",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: boolean",
    "operator": "$setField",
    "kind": "boolean",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: false",
    "operator": "$setField",
    "kind": "false",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: typed date",
    "operator": "$setField",
    "kind": "typed date",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: decimal128",
    "operator": "$setField",
    "kind": "decimal128",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: empty array",
    "operator": "$setField",
    "kind": "empty array",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: numeric array",
    "operator": "$setField",
    "kind": "numeric array",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: mixed array",
    "operator": "$setField",
    "kind": "mixed array",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: nested array",
    "operator": "$setField",
    "kind": "nested array",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField input: empty object",
    "operator": "$setField",
    "kind": "empty object",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField input: object",
    "operator": "$setField",
    "kind": "object",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"x\": {\"$numberInt\": \"1\"}, \"a\": {\"$numberInt\": \"1\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField input: ISO date string",
    "operator": "$setField",
    "kind": "ISO date string",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "input": "$probe",
        "value": 1
      }
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires document input and string field."
    }
  },
  {
    "id": "$setField value: null",
    "operator": "$setField",
    "kind": "null",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": null}}",
      "present": true
    }
  },
  {
    "id": "$setField value: missing",
    "operator": "$setField",
    "kind": "missing",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"a\": null}}",
      "present": true
    }
  },
  {
    "id": "$setField value: zero",
    "operator": "$setField",
    "kind": "zero",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"0\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: negative",
    "operator": "$setField",
    "kind": "negative",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberInt\": \"-2\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: decimal",
    "operator": "$setField",
    "kind": "decimal",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberDouble\": \"2.5\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: numeric string",
    "operator": "$setField",
    "kind": "numeric string",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": \"12\"}}",
      "present": true
    }
  },
  {
    "id": "$setField value: text",
    "operator": "$setField",
    "kind": "text",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": \"hello\"}}",
      "present": true
    }
  },
  {
    "id": "$setField value: empty string",
    "operator": "$setField",
    "kind": "empty string",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": \"\"}}",
      "present": true
    }
  },
  {
    "id": "$setField value: boolean",
    "operator": "$setField",
    "kind": "boolean",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": true}}",
      "present": true
    }
  },
  {
    "id": "$setField value: false",
    "operator": "$setField",
    "kind": "false",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": false}}",
      "present": true
    }
  },
  {
    "id": "$setField value: typed date",
    "operator": "$setField",
    "kind": "typed date",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$date\": {\"$numberLong\": \"1768489200000\"}}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: decimal128",
    "operator": "$setField",
    "kind": "decimal128",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"$numberDecimal\": \"1.25\"}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: empty array",
    "operator": "$setField",
    "kind": "empty array",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": []}}",
      "present": true
    }
  },
  {
    "id": "$setField value: numeric array",
    "operator": "$setField",
    "kind": "numeric array",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": [{\"$numberInt\": \"1\"}, {\"$numberInt\": \"2\"}, {\"$numberInt\": \"3\"}]}}",
      "present": true
    }
  },
  {
    "id": "$setField value: mixed array",
    "operator": "$setField",
    "kind": "mixed array",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": [{\"$numberInt\": \"1\"}, null, \"x\", {\"$numberInt\": \"3\"}]}}",
      "present": true
    }
  },
  {
    "id": "$setField value: nested array",
    "operator": "$setField",
    "kind": "nested array",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": [[{\"$numberInt\": \"1\"}, {\"$numberInt\": \"2\"}], [{\"$numberInt\": \"3\"}]]}}",
      "present": true
    }
  },
  {
    "id": "$setField value: empty object",
    "operator": "$setField",
    "kind": "empty object",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: object",
    "operator": "$setField",
    "kind": "object",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": {\"x\": {\"$numberInt\": \"1\"}}}}",
      "present": true
    }
  },
  {
    "id": "$setField value: ISO date string",
    "operator": "$setField",
    "kind": "ISO date string",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {},
        "value": "$probe"
      }
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "bson": "{\"v\": {\"a\": \"2026-01-15T15:00:00Z\"}}",
      "present": true
    }
  },
  {
    "id": "$setField omit field",
    "operator": "$setField",
    "kind": "omitted named argument",
    "operand": "field",
    "expression": {
      "$setField": {
        "input": {},
        "value": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires 'field', 'input', and 'value' keys."
    }
  },
  {
    "id": "$setField omit input",
    "operator": "$setField",
    "kind": "omitted named argument",
    "operand": "input",
    "expression": {
      "$setField": {
        "field": "a",
        "value": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires 'field', 'input', and 'value' keys."
    }
  },
  {
    "id": "$setField omit value",
    "operator": "$setField",
    "kind": "omitted named argument",
    "operand": "value",
    "expression": {
      "$setField": {
        "field": "a",
        "input": {}
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires 'field', 'input', and 'value' keys."
    }
  },
  {
    "id": "$setField empty arguments",
    "operator": "$setField",
    "kind": "empty arguments",
    "operand": "all",
    "expression": {
      "$setField": []
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires 'field', 'input', and 'value' keys."
    }
  },
  {
    "id": "$setField unknown option",
    "operator": "$setField",
    "kind": "unknown option",
    "operand": "all",
    "expression": {
      "$setField": {
        "unexpected": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$setField requires 'field', 'input', and 'value' keys."
    }
  }
]