StageNode

A node in the composition DAG: an act invocation, or a set combination over other nodes.

No Eq, only PartialEq — the act variant carries an intention, which carries the query
vector. See [Intention].

{
    "act": "find-exact",
    "edge_filter": null,
    "inputs": [
        {
            "as": "bound",
            "from": "caller",
            "ids": {
                "ids": [
                    "497f6eca-6276-4993-bfeb-53cbbbba6f08"
                ],
                "kind": "resource",
                "provenance": null
            }
        }
    ],
    "intention": null,
    "name": "string",
    "properties": [
        {
            "key": "string",
            "op": {
                "op": "has_key"
            }
        }
    ],
    "resource_filter": null,
    "terms": {
        "property1": 0,
        "property2": 0
    }
}