0
T
1
T
F
T
[data=broker::data{{bye, hi}}], {
bye,
hi
}
| [data=broker::data{bye}]
| [data=broker::data{hi}]

2
F
2
T
1
F
[data=broker::data{{bye}}], {
bye
}

T
0
[data=broker::data{{}}], {

}