> Simply put, an interface of the form
```
property(n, cells, result)
```

well, the current interface is more like
```
property(n, input, result)
```

where `input` is the pressure of the queried properties. that these inputs are cell specific currently is just a coincidence because the higher level code always calls it for cells. I'd _strongly_ propose to keep it that way, i.e., the call would be
```
property(n, inputs, pvtRegion, output)
```