// expect: error loop without a deferred block
{ "format": "maszyna-vehicle-graph", "version": 2, "nodes": [
	{ "id": "start", "type": "cab.switch" },
	{ "id": "hold", "type": "logic.or" },
	{ "id": "coil", "type": "logic.and" },
	{ "id": "stop", "type": "logic.const", "params": { "value": 1 } }
], "connections": [
	{ "from": "start.pos", "to": "hold.a" },
	{ "from": "coil.q", "to": "hold.b" },
	{ "from": "hold.q", "to": "coil.a" },
	{ "from": "stop.q", "to": "coil.b" }
] }