{
  "name": "include",
  "description": "Evaluates child slots and includes all returned nodes into each selected node",
  "signature": {
    "input": {
      "kind": "node-list",
      "description": "Expression selecting the destination node or nodes to include into",
      "required": true,
      "mode": "Expression"
    },
    "children": {
      "*": {
        "type": "lambda",
        "description": "Executable body evaluated once per selected node; all returned child nodes are included into that selected node",
        "required": true,
        "mode": "ExecutableLambda",
        "cardinality": "OneOrMore",
        "role": "ExecutableBody",
        "evaluation": "EvalSelf",
        "projection": "ReturnedResult"
      }
    },
    "output": {
      "mode": "Lambda",
      "kind": "node-list",
      "description": "Resolves to the matched destination nodes after all returned child nodes have been included"
    }
  }
}