Lambda
constructor(sources: List<NodeIdentity> = emptyList(), snapshot: Snapshot = Snapshot(), tags: Map<String, String> = emptyMap(), filename: String = "", timestamp: Long = 0, invocationTriggers: List<InvocationTrigger> = emptyList(), nodeAction: NodeAction = NodeAction.EXECUTE, error: String = "", inputs: List<NodeIdentity> = emptyList())(source)