{
  "name": "not",
  "description": "Negates a boolean expression",
  "signature": {
    "children": {
      "*": {
        "type": "lambda",
        "kind": "boolean",
        "description": "Executable operand returning a boolean value",
        "required": true,
        "mode": "ExecutableLambda",
        "cardinality": "ExactlyOne",
        "role": "Operand",
        "evaluation": "EvalSelf",
        "projection": "Self"
      }
    },
    "output": {
      "mode": "Value",
      "kind": "boolean",
      "description": "Resolves to true if the operand evaluates to false"
    }
  }
}