}
		// nolint: lll
		want := `{"id":"test","cluster":"cluster","metadata":{"A":1,"B":{"b":1},"OWNER":"real-owner","PROXY_CONFIG":{"serviceCluster":"cluster"},"UNKNOWN":"new-field"}}`
		test.JSONEquals(t, want, string(b))
	}

	node2 := ConvertXDSNodeToNode(out)
	{
		got, err := json.Marshal(node2)
		if err != nil {
			t.Fatalf("failed to marshal: %v", err)
		}
		// nolint: lll