{
  "name": "else-if",
  "description": "Evaluates the child lambda when its condition is true and no preceding [if]/[else-if] branch matched",
  "signature": {
    "children": {
      "*": {
        "type": "lambda",
        "kind": "boolean",
        "description": "Condition node evaluated for truthiness",
        "required": true,
        "mode": "ExecutableLambda",
        "cardinality": "ExactlyOne",
        "role": "Condition",
        "evaluation": "EvalSelf",
        "projection": "Value"
      },
      ".lambda": {
        "type": "lambda",
        "description": "Executable lambda block",
        "required": true,
        "mode": "ExecutableLambda",
        "cardinality": "ExactlyOne",
        "role": "LambdaBlock",
        "evaluation": "EvalBlock",
        "projection": "Self"
      }
    },
    "constraints": [
      {
        "description": "Previous sibling must be one of the listed slot names",
        "values": [
          "if",
          "else-if"
        ],
        "kind": "PreviousSiblingMustBeOneOf"
      }
    ]
  }
}