`omero.sys.ParametersI()` is the preferred method since about 4.2 I think. I honestly can't remember offhand when it was introduced. It provides methods to ease rtype usage, it initialises the filter, etc.

With it this code becomes:

```
p = omero.sys.ParametersI()
p.page(0, 1)
```

It's just much easier to work with overall.