var recv *Var
		switch len(recvList) {
		case 0:
			// error reported by resolver
			recv = NewParam(nopos, nil, "", Typ[Invalid]) // ignore recv below
		default:
			// more than one receiver
			check.error(recvList[len(recvList)-1].Pos(), InvalidRecv, "method must have exactly one receiver")
			fallthrough // continue with first receiver
		case 1:
			recv = recvList[0]
		}
		sig.recv = recv

		var recv *Var
		switch len(recvList) {
		case 0:
			// error reported by resolver
			recv = NewParam(nopos, nil, "", Typ[Invalid]) // ignore recv below
		default:
			// more than one receiver
			check.error(recvList[len(recvList)-1], InvalidRecv, "method has multiple receivers")
			fallthrough // continue with first receiver
		case 1:
			recv = recvList[0]
		}
		sig.recv = recv

		if dir == model.TrafficDirectionInbound {
			// Append all inbound clusters because in both stow/delta we always build all inbound clusters.
			// In reality, the delta building is only for outbound clusters. We need to revist here once we support delta for inbound.
			// So deletedClusters.Difference(builtClusters) would give us the correct deleted inbound clusters.
			deletedClusters.Insert(cluster)
		} else {
			if subset == "" {